Calculate 0.516*68.6+5.16*how much=51.6.
计算0.516*68.6+5.16*多少=51.6．
<gadget id="calculator">51.6 / 5.16</gadget>
<output>10</output>

<gadget id="calculator">10 - 6.86</gadget>
<output>3.14</output>

<result>3.14</result>