11+12+13+14+15+21+22+23+24+25+31+32+33+34+35+41+42+43+44+45=how many.
11+12+13+14+15+21+22+23+24+25+31+32+33+34+35+41+42+43+44+45=多少．
<gadget id="calculator">11 + 45</gadget>
<output>56</output>

<gadget id="calculator">45 - 11</gadget>
<output>34</output>

<gadget id="calculator">34 / 1</gadget>
<output>34</output>

<gadget id="calculator">34 + 1</gadget>
<output>35</output>

<gadget id="calculator">35 / 2</gadget>
<output>35/2 = around 17.5</output>

<gadget id="calculator">56 * (35/2)</gadget>
<output>980</output>

<result>980</result>