51279249 divided by 802 
We want to figure out the number of times 51279249 can be divided by 802.

On to step 1:
802 goes into 5 0 times with a remainder of 5.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 5 and we're left with 5.
Fetch the next digit (1) from the dividend, attach it to 5 and continue: 51 / 802

Moving on to step 2:
51 divided by 802 is 0 with a remainder of 51.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 51, we get 51.
Grab the next digit (2) from the dividend, add it to 51, then carry on: 512 / 802

On to step 3:
If we divide 512 by 802, we get 0 and a remainder of 512.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 512 and we're left with 512.
Bring next digit (7) of the dividend behind the 512 and repeat the process: 5127 / 802

Step 4:
If we divide 5127 by 802, we get 6 and a remainder of 315.
Write down 6 as next digit of the result. 
Result so far: 6.0
If we subtract 4812 from 5127, we get 315.
Include the next digit (9) from the dividend after 315, then repeat: 3159 / 802

Moving on to step 5:
If we divide 3159 by 802, we get 3 and a remainder of 753.
Use 3 as the next digit of our solution. 
Result so far: 63.0
If we take 2406 away from 3159, we end up with 753.
Grab the next digit (2) from the dividend, add it to 753, then carry on: 7532 / 802

Step 6:
802 goes into 7532 9 times with a remainder of 314.
Record the quotient 9 as the next digit in the result. 
Result so far: 639.0
Subtracting 7218 from 7532 leaves us with 314.
Take the next digit (4) from the dividend and append it to 314, then repeat: 3144 / 802

On to step 7:
802 goes into 3144 3 times with a remainder of 738.
The next digit of our result is 3. 
Result so far: 6393.0
If we take 2406 away from 3144, we end up with 738.
Append the next digit (9) from the dividend to 738 and continue with: 7389 / 802

Let's proceed to step 8:
802 goes into 7389 9 times with a remainder of 171.
Put 9 as the next digit of the answer. 
Result so far: 63939.0
Subtracting 7218 from 7389 leaves us with 171.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1710, and continue the process.

Advancing to step 9:
802 can be fit into 1710 2 times, resulting in a remainder of 106.
The number 2 becomes the next digit in our result. 
Result so far: 63939.2
Subtract 1604 from 1710 to get 106.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1060, and continue the process.

Moving on to step 10:
The number 802 fits into 1060 1 times, leaving a remainder of 258.
Write down 1 as next digit of the result. 
Result so far: 63939.21
If we take 802 away from 1060, we end up with 258.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2580, and continue the process.

Advancing to step 11:
802 goes into 2580 3 times with a remainder of 174.
The number 3 becomes the next digit in our result. 
Result so far: 63939.213
Subtract 2406 from 2580 to get 174.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1740, and continue the process.

Going ahead to step 12:
If we divide 1740 by 802, we get 2 and a remainder of 136.
The next digit of our result is 2. 
Result so far: 63939.2132
Subtract 1604 from 1740 to get 136.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1360, and continue the process.

Advancing to step 13:
When dividing 1360 by 802, we get 1 with a remainder of 558.
The next digit of our result is 1. 
Result so far: 63939.21321
If we subtract 802 from 1360, we get 558.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5580, and continue the process.

Step 14:
5580 divided by 802 is 6 with a remainder of 768.
Record the quotient 6 as the next digit in the result. 
Result so far: 63939.213216
Subtracting 4812 from 5580 leaves us with 768.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7680, and continue the process.

Step 15:
If we divide 7680 by 802, we get 9 and a remainder of 462.
The number 9 becomes the next digit in our result. 
Result so far: 63939.2132169
Subtract 7218 from 7680 to get 462.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4620, and continue the process.

Going ahead to step 16:
When dividing 4620 by 802, we get 5 with a remainder of 610.
The next digit of our result is 5. 
Result so far: 63939.21321695
The remainder is 610 after subtracting 4010 from 4620.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6100, and continue the process.

The quotient of the division is 63939.21321695, and the remainder is 6.1e-07.