362-(321.2-(□*57.8))+1.3*5.6/0.07=347.1, ()=how much.
362-(321.2-(□*57.8))+1.3*5.6/0.07=347.1，()=多少．
<gadget id="calculator">347.1 - 144.8</gadget>
<output>202.3</output>

<gadget id="calculator">202.3 / 57.8</gadget>
<output>3.5</output>

<result>3.5</result>