The number A is divided by the number B, and the quotient is 12 with a remainder of 3. It is known that the sum of A, B, the quotient and the remainder is 187. What is the B number?
甲数被乙数除，商12余3，已知甲数、乙数、商、余数的和是187，乙数是多少？
<gadget id="calculator">187 - 3 - 12 - 3</gadget>
<output>169</output>

<gadget id="calculator">1 + 12</gadget>
<output>13</output>

<gadget id="calculator">169 / 13</gadget>
<output>13</output>

<result>13</result>