In a division formula with a remainder, the sum of the dividend, divisor, quotient and remainder is 619. The known quotient is 15 and the remainder is 12. What is the divisor in the question?
在一道有余数的除法算式中，被除数、除数、商和余数的和是619，已知商是15，余数是12，请问，题目中的除数是多少？
<gadget id="calculator">619 - 12 - 15 - 12</gadget>
<output>580</output>

<gadget id="calculator">15 + 1</gadget>
<output>16</output>

<gadget id="calculator">580 / 16</gadget>
<output>145/4 = around 36.25</output>

<result>145/4 = around 36.25</result>