If 3x=15, then what is 5.9x+10.
如果3x=15，那么5.9x+10是多少．
<gadget id="calculator">15 / 3</gadget>
<output>5</output>

<gadget id="calculator">5.9 * 5</gadget>
<output>29.5</output>

<gadget id="calculator">29.5 + 10</gadget>
<output>39.5</output>

<result>39.5</result>