Simple operation: 63*25+43*25.
简便运算：63*25+43*25．
<gadget id="calculator">63 * 25</gadget>
<output>1_575</output>

<gadget id="calculator">43 * 25</gadget>
<output>1_075</output>

<gadget id="calculator">1_575 + 1_075</gadget>
<output>2_650</output>

<result>2_650</result>