There is a pasture that raises 30 cows, and the number of cows is less than that of sheep (3/8). How many sheep?
有一个牧场，养了30头牛，牛的数量比羊少(3/8)．养羊多少只？
<gadget id="calculator">3 / 8</gadget>
<output>3/8 = around 0.375</output>

<gadget id="calculator">1 - (3/8)</gadget>
<output>5/8 = around 0.625</output>

<gadget id="calculator">30 / (5/8)</gadget>
<output>48</output>

<result>48</result>