The total price of a coat and a pair of trousers is 360 yuan, and the price ratio of the coat and trousers is 5:4. How much does it cost to buy a pair of trousers?
一件上衣与一条裤子的总价为360元，上衣与裤子的价钱比是5：4，买一条裤子应花多少元．
<gadget id="calculator">5 + 4</gadget>
<output>9</output>

<gadget id="calculator">4 / 9</gadget>
<output>4/9 = around 0.444444</output>

<gadget id="calculator">360 * (4/9)</gadget>
<output>160</output>

<result>160</result>