The sum of the two numbers AB is 12.1. If the number A is reduced by 10 times, it will be equal to the number B. What is the number B?
AB两数的和是12.1，如果A数缩小10倍，就与B数相等，B数是多少？
<gadget id="calculator">10 + 1</gadget>
<output>11</output>

<gadget id="calculator">12.1 / 11</gadget>
<output>1.1</output>

<result>1.1</result>