diff --git a/.rubocop.yml b/.rubocop.yml
index 3ec2fa4..ed6bf9a 100644
--- a/.rubocop.yml
+++ b/.rubocop.yml
@@ -14,4 +14,4 @@ AllCops:
 Layout/LineLength:
   Max: 120
 RSpec/ExampleLength:
-  Max: 10
\ No newline at end of file
+  Max: 30
\ No newline at end of file
diff --git a/spec/queries/expenses/total_query_spec.rb b/spec/queries/expenses/total_query_spec.rb
index f721844..371dc1a 100644
--- a/spec/queries/expenses/total_query_spec.rb
+++ b/spec/queries/expenses/total_query_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 # Copyright (C) 2024 Manuel Bustillo
 
 require 'rails_helper'
@@ -61,8 +63,8 @@ module Expenses
         end
 
         it 'returns the sum of fixed and variable expenses', :aggregate_failures do
-          expect(response['total_confirmed']).to eq(100 + 200 + 50 * 2)
-          expect(response['total_projected']).to eq(100 + 200 + 11 * 50)
+          expect(response['total_confirmed']).to eq(100 + 200 + (50 * 2))
+          expect(response['total_projected']).to eq(100 + 200 + (11 * 50))
           expect(response['confirmed_guests']).to eq(2)
           expect(response['projected_guests']).to eq(2 + 4 + 5)
         end
diff --git a/spec/queries/groups/summary_query_spec.rb b/spec/queries/groups/summary_query_spec.rb
index 6e2c3d2..0aa1490 100644
--- a/spec/queries/groups/summary_query_spec.rb
+++ b/spec/queries/groups/summary_query_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 # Copyright (C) 2024 Manuel Bustillo
 
 require 'rails_helper'
@@ -5,7 +7,7 @@ require 'rails_helper'
 module Groups
   RSpec.describe SummaryQuery do
     describe '#call' do
-      subject { described_class.new.call }
+      subject(:result) { described_class.new.call }
 
       context 'when there are no groups' do
         it { is_expected.to eq([]) }
@@ -17,7 +19,7 @@ module Groups
 
         context 'when there are no guests' do
           it 'returns the summary of groups' do
-            is_expected.to contain_exactly(
+            expect(result).to contain_exactly(
               { 'id' => parent.id,
                 'name' => 'Friends',
                 'icon' => 'icon-1',
@@ -58,11 +60,11 @@ module Groups
             create_list(:guest, 8, group: child, status: :invited)
             create_list(:guest, 9, group: child, status: :confirmed)
             create_list(:guest, 10, group: child, status: :declined)
-            create_list(:guest, 11, group: child, status: :tentative)
+            create_list(:guest, 11, group: child, status: :tentative) # rubocop:disable FactoryBot/ExcessiveCreateList
           end
 
           it 'returns the summary of groups' do
-            is_expected.to contain_exactly(
+            expect(result).to contain_exactly(
               {
                 'id' => parent.id,
                 'name' => 'Friends',