Use the formula 42600 ÷ (6.9 ÷<span> 100) to calculate this !
</span>42,600 ÷ (6.9 ÷ 100) = <span>617391.304348. Round this to 617391 since you can't sell a percentage of a book. </span> To check this, calculate 6.9 percent of 617391.304348. 0.069 · 617391.304348 = 42,600.
