A rice mill grinds 50 kg of rice in 30 minutes. According to this calculation, how many minutes does it take to grind 1 kg of rice.
一台碾米机30分钟碾米50千克，照这样计算，碾1千克米要用多少分钟．
<gadget id="calculator">30 / 50</gadget>
<output>3/5 = around 0.6</output>

<result>3/5 = around 0.6</result>