7.24*0.1+0.5*72.4+0.049*724.
7.24*0.1+0.5*72.4+0.049*724．
<gadget id="calculator">7.24 * 0.1</gadget>
<output>0.724</output>

<gadget id="calculator">0.5 * 72.4</gadget>
<output>36.2</output>

<gadget id="calculator">0.049 * 724</gadget>
<output>35.476</output>

<gadget id="calculator">0.724 + 36.2 + 35.476</gadget>
<output>72.4</output>

<result>72.4</result>