What is the calculation result of the formula 1*2+3*4+5*6+7*8+9*10?
算式1*2+3*4+5*6+7*8+9*10的计算结果是多少．
<gadget id="calculator">1 * 2</gadget>
<output>2</output>

<gadget id="calculator">3 * 4</gadget>
<output>12</output>

<gadget id="calculator">5 * 6</gadget>
<output>30</output>

<gadget id="calculator">7 * 8</gadget>
<output>56</output>

<gadget id="calculator">9 * 10</gadget>
<output>90</output>

<gadget id="calculator">2 + 12 + 30 + 56 + 90</gadget>
<output>190</output>

<result>190</result>