Calculation: 7.3+12.8-3.8*2.3.
计算：7.3+12.8-3.8*2.3．
<gadget id="calculator">3.8 * 2.3</gadget>
<output>8.74</output>

<gadget id="calculator">12.8 - 8.74</gadget>
<output>4.06</output>

<gadget id="calculator">7.3 + 4.06</gadget>
<output>11.36</output>

<result>11.36</result>