In the ratio "45:30=48:32", subtract 33 from 45 and keep 30 and 48 unchanged, how much should be added to 32 to make the ratio valid.
在比例"45：30=48：32"中，从45里减去33而30、48这两项不变，要使比例成立应给32上加多少．
<gadget id="calculator">45 - 33</gadget>
<output>12</output>

<gadget id="calculator">48 / 12</gadget>
<output>4</output>

<gadget id="calculator">30 * 4</gadget>
<output>120</output>

<gadget id="calculator">120 - 32</gadget>
<output>88</output>

<result>88</result>