Put 40kg of pesticide into 60kg of water, how much does the medicine account for in the potion
把农药40kg放入60kg的水中，药占药水的多少
<gadget id="calculator">40 + 60</gadget>
<output>100</output>

<gadget id="calculator">40 / 100</gadget>
<output>2/5 = around 0.4</output>

<result>2/5 = around 0.4</result>