0.07 is enlarged by 100 times and subtracted from 0.7, what is the difference?
0.07扩大100倍之后减去0.7，差是多少．
<gadget id="calculator">0.07 * 100</gadget>
<output>7</output>

<gadget id="calculator">7 - 0.7</gadget>
<output>6.3</output>

<result>6.3</result>