The task is to generate the correct answer for a given math problem.

Q: Problem: a customer went to a shop and paid a total of $ 40 , out of which $ 1.28 was for sales tax on taxable purchases . if the tax rate was 8 % , then what was the cost of the tax free items ?

A: $ 22.72
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Q: Problem: if the sides of a triangle are 26 cm , 24 cm and 15 cm , what is its area ?

A: 180
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Q: Problem: ( 4300531 ) - ? = 2535618

A:
1764913
****