5.1 times of a number is 56 more than its 4.7 times. Find this number.
一个数的5.1倍比它的4.7倍多56，求这个数．
<gadget id="calculator">5.1 - 4.7</gadget>
<output>0.4</output>

<gadget id="calculator">56 / 0.4</gadget>
<output>140</output>

<result>140</result>