A pair of trousers and a piece of clothing are 140 yuan in total. The price of the trousers is 3/4 of that of the shirt. How much is a pair of trousers (use the equation to solve)
一条裤子和一件衣服共140元，裤子的价钱是衬衣的(3/4)，一条裤子多少元(用方程解)
<gadget id="calculator">3 / 4</gadget>
<output>3/4 = around 0.75</output>

<gadget id="calculator">1 + (3/4)</gadget>
<output>7/4 = around 1.75</output>

<gadget id="calculator">140 / (7/4)</gadget>
<output>80</output>

<gadget id="calculator">80 * (3/4)</gadget>
<output>60</output>

<result>60</result>