The sum of the numbers A and B is 143. If the number A is enlarged by 10 times, it will be equal to the number B. What is the number A?
甲、乙两数的和是143，如果将甲数扩大10倍就和乙数相等，甲数是多少．
<gadget id="calculator">10 + 1</gadget>
<output>11</output>

<gadget id="calculator">143 / 11</gadget>
<output>13</output>

<result>13</result>