7.8 times of a number is 7.8 times greater than 7.8, find this number.
一个数的7.8倍比7.8大7.8，求这个数．
<gadget id="calculator">7.8 + 7.8</gadget>
<output>15.6</output>

<gadget id="calculator">15.6 / 7.8</gadget>
<output>2</output>

<result>2</result>