There are 42 horses in the pasture, the number of cattle is 5/7 of the number of horses, and the number of sheep is 1/3 of the number of cattle. How many sheep are there in the pasture?
牧场养马42匹，养牛的头数是马匹数的(5/7)，而养羊的只数是牛的头数的(1/3)，牧场养羊多少只？
<gadget id="calculator">5 / 7</gadget>
<output>5/7 = around 0.714286</output>

<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">42 * (5/7) * (1/3)</gadget>
<output>10</output>

<result>10</result>