Calculation: 49*37+51*62+51*37+49*62.
计算：49*37+51*62+51*37+49*62．
<gadget id="calculator">49 * 37</gadget>
<output>1_813</output>

<gadget id="calculator">51 * 62</gadget>
<output>3_162</output>

<gadget id="calculator">51 * 37</gadget>
<output>1_887</output>

<gadget id="calculator">49 * 62</gadget>
<output>3_038</output>

<gadget id="calculator">1_813 + 3_162 + 1_887 + 3_038</gadget>
<output>9_900</output>

<result>9_900</result>