Calculation: 75*4.7+15.9*25=how much.
计算：75*4.7+15.9*25=多少．
<gadget id="calculator">75 * 4.7</gadget>
<output>352.5</output>

<gadget id="calculator">15.9 * 25</gadget>
<output>397.5</output>

<gadget id="calculator">352.5 + 397.5</gadget>
<output>750</output>

<result>750</result>