There are 200 sheep, which are the number of beef cattle (5/9), and the total number of beef cattle is sold (3/4), how many beef cattle are left?
羊有200只，是肉牛头数的(5/9)，卖掉肉牛总数的(3/4)，还剩下多少头肉牛？
<gadget id="calculator">5 / 9</gadget>
<output>5/9 = around 0.555556</output>

<gadget id="calculator">200 / (5/9)</gadget>
<output>360</output>

<gadget id="calculator">3 / 4</gadget>
<output>3/4 = around 0.75</output>

<gadget id="calculator">1 - (3/4)</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">360 * (1/4)</gadget>
<output>90</output>

<result>90</result>