53*46+54*53．
53*46+54*53．
<gadget id="calculator">53 * 46</gadget>
<output>2_438</output>

<gadget id="calculator">54 * 53</gadget>
<output>2_862</output>

<gadget id="calculator">2_438 + 2_862</gadget>
<output>5_300</output>

<result>5_300</result>