When two numbers are subtracted, the difference is equal to 8. If the subtrahend is doubled and the subtrahend remains unchanged, the difference will increase by 300%. What is the subtrahend?
两个数相减，差等于8，如果被减数扩大2倍而减数不变，差就增加300%，减数是多少．
<gadget id="calculator">32 - 16</gadget>
<output>16</output>

<gadget id="calculator">2 - 1</gadget>
<output>1</output>

<gadget id="calculator">16 / 1</gadget>
<output>16</output>

<result>16</result>