Mingming bought a calculator with a 15% discount and spent 170 yuan. How much is the original price of this calculator?
明明买了一台计算器，打八五折，花了170元，这个计算器原价几元？
<gadget id="calculator">85 / 100</gadget>
<output>17/20 = around 0.85</output>

<gadget id="calculator">170 / (17/20)</gadget>
<output>200</output>

<result>200</result>