807710 ÷ 20 
We're looking to find how many times 20 goes into 807710.

Advancing to step 1:
20 can be fit into 8 0 times, resulting in a remainder of 8.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 8 to get 8.
Fetch the next digit (0) from the dividend, attach it to 8 and continue: 80 / 20

Advancing to step 2:
The number 20 fits into 80 4 times, leaving a remainder of 0.
Put 4 as the next digit of the answer. 
Result so far: 4.0
Subtract 80 from 80 to get 0.
Append the next digit (7) from the dividend to 0 and continue with: 7 / 20

Moving on to step 3:
The number 20 fits into 7 0 times, leaving a remainder of 7.
Record the quotient 0 as the next digit in the result. 
Result so far: 40.0
Deduct 0 from 7 and we're left with 7.
Grab the next digit (7) from the dividend, add it to 7, then carry on: 77 / 20

Step 4:
When dividing 77 by 20, we get 3 with a remainder of 17.
The next digit of our result is 3. 
Result so far: 403.0
The remainder is 17 after subtracting 60 from 77.
Bring next digit (1) of the dividend behind the 17 and repeat the process: 171 / 20

Advancing to step 5:
If we divide 171 by 20, we get 8 and a remainder of 11.
Put 8 as the next digit of the answer. 
Result so far: 4038.0
Subtract 160 from 171 to get 11.
Fetch the next digit (0) from the dividend, attach it to 11 and continue: 110 / 20

Moving on to step 6:
The number 20 fits into 110 5 times, leaving a remainder of 10.
Write down 5 as next digit of the result. 
Result so far: 40385.0
If we take 100 away from 110, we end up with 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Moving on to step 7:
When dividing 100 by 20, we get 5 with a remainder of 0.
The number 5 becomes the next digit in our result. 
Result so far: 40385.5
If we subtract 100 from 100, we get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Moving on to step 8:
0 divided by 20 is 0 with a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 40385.5
Deduct 0 from 0 and we're left 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.

Let's proceed to step 9:
0 divided by 20 is 0 with a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 40385.5
Deduct 0 from 0 and we're left 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 40385.5, with a leftover of 0.0.