The number of A is 58, the number of B is 11 times of the number of A, and the number of A is less than the number of B.
甲数是58，乙数是甲数的11倍，甲数比乙数少多少．
<gadget id="calculator">58 * 11</gadget>
<output>638</output>

<gadget id="calculator">638 - 58</gadget>
<output>580</output>

<result>580</result>