939491 ÷ 20 
We want to figure out the number of times 939491 can be divided by 20.

Moving on to step 1:
When dividing 9 by 20, we get 0 with a remainder of 9.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 9 to get 9.
Take the next digit (3) from the dividend and append it to 9, then repeat: 93 / 20

Advancing to step 2:
If we divide 93 by 20, we get 4 and a remainder of 13.
Write down 4 as next digit of the result. 
Result so far: 4.0
Subtract 80 from 93 to get 13.
Include the next digit (9) from the dividend after 13, then repeat: 139 / 20

Let's proceed to step 3:
If we divide 139 by 20, we get 6 and a remainder of 19.
Write down 6 as next digit of the result. 
Result so far: 46.0
Subtracting 120 from 139 leaves us with 19.
Append the next digit (4) from the dividend to 19 and continue with: 194 / 20

Let's proceed to step 4:
If we divide 194 by 20, we get 9 and a remainder of 14.
Write down 9 as next digit of the result. 
Result so far: 469.0
Subtract 180 from 194 to get 14.
Include the next digit (9) from the dividend after 14, then repeat: 149 / 20

Let's proceed to step 5:
The number 20 fits into 149 7 times, leaving a remainder of 9.
The next digit of our result is 7. 
Result so far: 4697.0
If we take 140 away from 149, we end up with 9.
Fetch the next digit (1) from the dividend, attach it to 9 and continue: 91 / 20

Let's proceed to step 6:
20 can be fit into 91 4 times, resulting in a remainder of 11.
The next digit of our result is 4. 
Result so far: 46974.0
If we take 80 away from 91, we end up with 11.
Since there are no more digits in the dividend, we add a zero to the remainder making it 110, and continue the process.

Moving on to step 7:
When dividing 110 by 20, we get 5 with a remainder of 10.
The next digit of our result is 5. 
Result so far: 46974.5
Subtract 100 from 110 to get 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Let's proceed to step 8:
If we divide 100 by 20, we get 5 and a remainder of 0.
Record the quotient 5 as the next digit in the result. 
Result so far: 46974.55
If we take 100 away from 100, we end up with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

The final outcome is 46974.55, with a leftover of 0.0.