88-87+86-85+...+2-1．
88-87+86-85+…+2-1．
<gadget id="calculator">2 - 1</gadget>
<output>1</output>

<gadget id="calculator">88 / 2</gadget>
<output>44</output>

<gadget id="calculator">1 * 44</gadget>
<output>44</output>

<result>44</result>