Solution of problem 827 of the collection on general ch

If the total amount of your purchases from the seller Михаил_Перович more than:
- 20383 ₽ the discount is 15%
- 10191 ₽ the discount is 10%
- 5096 ₽ the discount is 7%
- 2038 ₽ the discount is 5%
- 1019 ₽ the discount is 3%
- 510 ₽ the discount is 2%
- 102 ₽ the discount is 1%

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827. Calculate how much Berlotole salt can be obtained from 168 g of potassium hydroxide.