We're dividing 51506 by 80 
We're looking to find how many times 80 goes into 51506.

Let's proceed to step 1:
80 goes into 5 0 times with a remainder of 5.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 5, we end up with 5.
Include the next digit (1) from the dividend after 5, then repeat: 51 / 80

Step 2:
51 divided by 80 is 0 with a remainder of 51.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 51 after subtracting 0 from 51.
Fetch the next digit (5) from the dividend, attach it to 51 and continue: 515 / 80

Moving on to step 3:
If we divide 515 by 80, we get 6 and a remainder of 35.
The number 6 becomes the next digit in our result. 
Result so far: 6.0
Deduct 480 from 515 and we're left with 35.
Bring next digit (0) of the dividend behind the 35 and repeat the process: 350 / 80

Advancing to step 4:
If we divide 350 by 80, we get 4 and a remainder of 30.
The number 4 becomes the next digit in our result. 
Result so far: 64.0
If we take 320 away from 350, we end up with 30.
Append the next digit (6) from the dividend to 30 and continue with: 306 / 80

Going ahead to step 5:
80 goes into 306 3 times with a remainder of 66.
Write down 3 as next digit of the result. 
Result so far: 643.0
If we take 240 away from 306, we end up with 66.
Since there are no more digits in the dividend, we add a zero to the remainder making it 660, and continue the process.

Step 6:
If we divide 660 by 80, we get 8 and a remainder of 20.
Write down 8 as next digit of the result. 
Result so far: 643.8
Subtract 640 from 660 to get 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Step 7:
If we divide 200 by 80, we get 2 and a remainder of 40.
Write down 2 as next digit of the result. 
Result so far: 643.82
If we take 160 away from 200, we end up with 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Moving on to step 8:
400 divided by 80 is 5 with a remainder of 0.
Use 5 as the next digit of our solution. 
Result so far: 643.825
Deduct 400 from 400 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.

Going ahead to step 9:
0 divided by 80 is 0 with a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 643.825
If we subtract 0 from 0, 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.

On to step 10:
0 divided by 80 is 0 with a remainder of 0.
The next digit of our result is 0. 
Result so far: 643.825
If we take 0 away from 0, 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 quotient of the division is 643.825, and the remainder is 0.0.