3 workers process 90 parts in 5 hours, how many workers are needed to complete the processing of 540 parts in 10 hours.
3名工人5小时加工零件90件，要在10小时完成540个零件的加工，需要工人多少人．
<gadget id="calculator">90 / 5 / 3</gadget>
<output>6</output>

<gadget id="calculator">540 / 10 / 6</gadget>
<output>9</output>

<result>9</result>