Calculation: (121+122+...+180)-(41+42+...+100).
计算：(121+122+…+180)-(41+42+…+100)．
<gadget id="calculator">180 - 100</gadget>
<output>80</output>

<gadget id="calculator">80 * 60</gadget>
<output>4_800</output>

<result>4_800</result>