For a liquid medicine, the ratio of medicine to water is 1:1500, how many grams of medicine can be prepared from 80 grams of medicine.
一个药液，药与水的比是1：1500，则80克药可配制药水多少克．
<gadget id="calculator">1 / 1_500</gadget>
<output>1/1_500 = around 0.000667</output>

<gadget id="calculator">80 / (1/1_500)</gadget>
<output>120_000</output>

<gadget id="calculator">80 + 120_000</gadget>
<output>120_080</output>

<result>120_080</result>