Dad bought a suit for 680 yuan, and the price of the trousers is 1/3 of the jacket. How much is each jacket?
爸爸买一套西服用去680元，裤子的价格是上衣的(1/3)，每件上衣多少元？
<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">1 + (1/3)</gadget>
<output>4/3 = around 1.333333</output>

<gadget id="calculator">680 / (4/3)</gadget>
<output>510</output>

<result>510</result>