7014-5*7*11*13=how much.
7014-5*7*11*13=多少．
<gadget id="calculator">5 * 7 * 11 * 13</gadget>
<output>5_005</output>

<gadget id="calculator">7_014 - 5_005</gadget>
<output>2_009</output>

<result>2_009</result>