In a division equation, the sum of the dividend, the divisor, the quotient and the remainder is 9. If the dividend and the divisor are enlarged by 100 times, then the quotient is 5 with a remainder of 20. What is the divisor in the original formula?
一个除法等式里，被除数、除数、商和余数的和是9，如果把被除数、除数都扩大100倍，那么商5余20，原式中的除数是多少
<gadget id="calculator">9 - 0.2 - 5 - 0.2</gadget>
<output>3.6</output>

<gadget id="calculator">5 + 1</gadget>
<output>6</output>

<gadget id="calculator">3.6 / 6</gadget>
<output>0.6</output>

<result>0.6</result>