Calculation: 8.4*2.77+2.3*0.84.
计算：8.4*2.77+2.3*0.84．
<gadget id="calculator">8.4 * 2.77</gadget>
<output>23.268</output>

<gadget id="calculator">2.3 * 0.84</gadget>
<output>1.932</output>

<gadget id="calculator">23.268 + 1.932</gadget>
<output>25.2</output>

<result>25.2</result>