51269473 divided by 320 
We want to figure out the number of times 51269473 can be divided by 320.

On to step 1:
320 can be fit into 5 0 times, resulting in a remainder of 5.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 5, we end up with 5.
Fetch the next digit (1) from the dividend, attach it to 5 and continue: 51 / 320

Going ahead to step 2:
320 goes into 51 0 times with a remainder of 51.
Write down 0 as next digit of the result. 
Result so far: 0.0
The remainder is 51 after subtracting 0 from 51.
Bring next digit (2) of the dividend behind the 51 and repeat the process: 512 / 320

Going ahead to step 3:
The number 320 fits into 512 1 times, leaving a remainder of 192.
Put 1 as the next digit of the answer. 
Result so far: 1.0
Subtract 320 from 512 to get 192.
Fetch the next digit (6) from the dividend, attach it to 192 and continue: 1926 / 320

Advancing to step 4:
320 goes into 1926 6 times with a remainder of 6.
Put 6 as the next digit of the answer. 
Result so far: 16.0
Subtracting 1920 from 1926 leaves us with 6.
Include the next digit (9) from the dividend after 6, then repeat: 69 / 320

Moving on to step 5:
When dividing 69 by 320, we get 0 with a remainder of 69.
Record the quotient 0 as the next digit in the result. 
Result so far: 160.0
The remainder is 69 after subtracting 0 from 69.
Fetch the next digit (4) from the dividend, attach it to 69 and continue: 694 / 320

Let's proceed to step 6:
694 divided by 320 is 2 with a remainder of 54.
The next digit of our result is 2. 
Result so far: 1602.0
The remainder is 54 after subtracting 640 from 694.
Fetch the next digit (7) from the dividend, attach it to 54 and continue: 547 / 320

Moving on to step 7:
320 goes into 547 1 times with a remainder of 227.
Put 1 as the next digit of the answer. 
Result so far: 16021.0
Subtract 320 from 547 to get 227.
Take the next digit (3) from the dividend and append it to 227, then repeat: 2273 / 320

Step 8:
The number 320 fits into 2273 7 times, leaving a remainder of 33.
The next digit of our result is 7. 
Result so far: 160217.0
Deduct 2240 from 2273 and we're left with 33.
Since there are no more digits in the dividend, we add a zero to the remainder making it 330, and continue the process.

Step 9:
The number 320 fits into 330 1 times, leaving a remainder of 10.
The next digit of our result is 1. 
Result so far: 160217.1
Deduct 320 from 330 and we're left 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.

Advancing to step 10:
When dividing 100 by 320, we get 0 with a remainder of 100.
Record the quotient 0 as the next digit in the result. 
Result so far: 160217.1
If we subtract 0 from 100, we get 100.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1000, and continue the process.

Step 11:
320 goes into 1000 3 times with a remainder of 40.
Record the quotient 3 as the next digit in the result. 
Result so far: 160217.103
Subtracting 960 from 1000 leaves us 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.

Step 12:
When dividing 400 by 320, we get 1 with a remainder of 80.
Record the quotient 1 as the next digit in the result. 
Result so far: 160217.1031
Subtracting 320 from 400 leaves us with 80.
Since there are no more digits in the dividend, we add a zero to the remainder making it 800, and continue the process.

On to step 13:
320 goes into 800 2 times with a remainder of 160.
Put 2 as the next digit of the answer. 
Result so far: 160217.10312
The remainder is 160 after subtracting 640 from 800.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1600, and continue the process.

Going ahead to step 14:
The number 320 fits into 1600 5 times, leaving a remainder of 0.
The next digit of our result is 5. 
Result so far: 160217.103125
Subtract 1600 from 1600 to 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 15:
0 divided by 320 is 0 with a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 160217.103125
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.

Moving on to step 16:
If we divide 0 by 320, we get 0 and a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 160217.103125
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 result is 160217.103125 with a remainder of 0.0.