2.8*33.4+45.9*7.2.
2.8*33.4+45.9*7.2．
<gadget id="calculator">2.8 * 33.4</gadget>
<output>93.52</output>

<gadget id="calculator">45.9 * 7.2</gadget>
<output>330.48</output>

<gadget id="calculator">93.52 + 330.48</gadget>
<output>424</output>

<result>424</result>