The price of a schoolbag is 80 yuan, which is cheaper than the price of a pair of sports shoes (7/15). How much is a pair of sports shoes?
一个书包的价格是80元，比一双运动鞋的价格便宜了(7/15)，一双运动鞋多少元？
<gadget id="calculator">7 / 15</gadget>
<output>7/15 = around 0.466667</output>

<gadget id="calculator">1 - (7/15)</gadget>
<output>8/15 = around 0.533333</output>

<gadget id="calculator">80 / (8/15)</gadget>
<output>150</output>

<result>150</result>