A certain farm has 30 more cattle than five times the number of sheep. Known to raise 320 cattle, how many sheep?
某农场养牛的头数比养羊的5倍多30头．已知养牛320头，养羊多少头？
<gadget id="calculator">320 - 30</gadget>
<output>290</output>

<gadget id="calculator">290 / 5</gadget>
<output>58</output>

<result>58</result>