The shoe factory produces leather shoes. In October, it buys 60 pieces of cowhide. Each pair of shoes needs (4/15) pieces of cowhide. Give (4/5) of the finished shoes to the army. How many pairs of leather shoes are given to the army?
鞋厂生产皮鞋，十月份购进60张牛皮，每双鞋需要牛皮(4/15)张，把做好的鞋的(4/5)送给部队，送给部队多少双皮鞋？
<gadget id="calculator">4 / 15</gadget>
<output>4/15 = around 0.266667</output>

<gadget id="calculator">60 / (4/15)</gadget>
<output>225</output>

<gadget id="calculator">4 / 5</gadget>
<output>4/5 = around 0.8</output>

<gadget id="calculator">225 * (4/5)</gadget>
<output>180</output>

<result>180</result>