Calculation: 5*9+4*90+3*900-2*9000+900000.
计算：5*9+4*90+3*900-2*9000+900000．
<gadget id="calculator">5 * 9</gadget>
<output>45</output>

<gadget id="calculator">4 * 90</gadget>
<output>360</output>

<gadget id="calculator">3 * 900</gadget>
<output>2_700</output>

<gadget id="calculator">2 * 9_000</gadget>
<output>18_000</output>

<gadget id="calculator">2_700 - 18_000</gadget>
<output>-15_300</output>

<gadget id="calculator">45 + 360 + (-15_300) + 900_000</gadget>
<output>885_105</output>

<result>885_105</result>