3.14*31.4+628*0.686+68.6*6.86.
3.14*31.4+628*0.686+68.6*6.86．
<gadget id="calculator">3.14 * 31.4</gadget>
<output>98.596</output>

<gadget id="calculator">628 * 0.686</gadget>
<output>430.808</output>

<gadget id="calculator">68.6 * 6.86</gadget>
<output>470.596</output>

<gadget id="calculator">98.596 + 430.808 + 470.596</gadget>
<output>1_000</output>

<result>1_000</result>