300 kg of wheat can be used to grind 250 kg of flour. How many tons of wheat are needed to grind 50 tons of flour?
用300千克小麦，可磨出250千克面粉，如果要磨出50吨面粉，需要多少吨小麦．
<gadget id="calculator">300 * 50</gadget>
<output>15_000</output>

<gadget id="calculator">15_000 / 250</gadget>
<output>60</output>

<result>60</result>