2.1*5.1*159.1/0.7/1.7/3.7=how many.
2.1*5.1*159.1/0.7/1.7/3.7=多少．
<gadget id="calculator">159.1 / 0.7 / 1.7 / 3.7</gadget>
<output>36.134454</output>

<gadget id="calculator">2.1 * 5.1 * 36.134454</gadget>
<output>387.000002</output>

<result>387.000002</result>