100+99+98-97-96-95+...+10+9+8-7-6-5+4+3+2-1=how much.
100+99+98-97-96-95+…+10+9+8-7-6-5+4+3+2-1=多少．
<gadget id="calculator">9 * 16</gadget>
<output>144</output>

<gadget id="calculator">2 - 1</gadget>
<output>1</output>

<gadget id="calculator">144 + 4 + 3 + 1</gadget>
<output>152</output>

<result>152</result>