Calculation: 5*8+15*8+25*8+35*8+45*8=how much.
计算：5*8+15*8+25*8+35*8+45*8=多少．
<gadget id="calculator">5 * 8</gadget>
<output>40</output>

<gadget id="calculator">15 * 8</gadget>
<output>120</output>

<gadget id="calculator">25 * 8</gadget>
<output>200</output>

<gadget id="calculator">35 * 8</gadget>
<output>280</output>

<gadget id="calculator">45 * 8</gadget>
<output>360</output>

<gadget id="calculator">40 + 120 + 200 + 280 + 360</gadget>
<output>1_000</output>

<result>1_000</result>