In a subtraction formula, the ratio of the difference to the subtrahend is 3:5, and the subtrahend is the amount of the minuend.
在一个减法算式中，差与减数的比是3：5，减数是被减数的多少．
<gadget id="calculator">3 + 5</gadget>
<output>8</output>

<gadget id="calculator">5 / 8</gadget>
<output>5/8 = around 0.625</output>

<result>5/8 = around 0.625</result>