There are 100 rabbit feet, the number of chicken feet is 60% of the number of rabbit feet, how many chickens and rabbit feet are there?
兔脚有100只，鸡脚的只数是兔脚只数的60%，鸡兔脚数共多少只．
<gadget id="calculator">60 / 100</gadget>
<output>3/5 = around 0.6</output>

<gadget id="calculator">100 * (3/5)</gadget>
<output>60</output>

<gadget id="calculator">60 + 100</gadget>
<output>160</output>

<result>160</result>