whats-40-of-50

whats 40 of 50 whats 40 of 500 whats 40 of 5000 whats 40 of 50000 whats 40 of 50 dollars whats 40 of 50k what is 40 of 50 000 whats 40 of 500k whats 40 of 504 what is 40 of 5000 dollars