Simple calculation: 3.78*1.7+1.7*1.22.
简便计算：3.78*1.7+1.7*1.22．
<gadget id="calculator">3.78 * 1.7</gadget>
<output>6.426</output>

<gadget id="calculator">1.7 * 1.22</gadget>
<output>2.074</output>

<gadget id="calculator">6.426 + 2.074</gadget>
<output>8.5</output>

<result>8.5</result>