We're dividing 51393477 by 602 
We want to figure out the number of times 51393477 can be divided by 602.

Going ahead to step 1:
The number 602 fits into 5 0 times, leaving a remainder of 5.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 5 and we're left with 5.
Grab the next digit (1) from the dividend, add it to 5, then carry on: 51 / 602

Moving on to step 2:
602 goes into 51 0 times with a remainder of 51.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 51, we get 51.
Fetch the next digit (3) from the dividend, attach it to 51 and continue: 513 / 602

Moving on to step 3:
513 divided by 602 is 0 with a remainder of 513.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 513 and we're left with 513.
Include the next digit (9) from the dividend after 513, then repeat: 5139 / 602

On to step 4:
602 goes into 5139 8 times with a remainder of 323.
Use 8 as the next digit of our solution. 
Result so far: 8.0
Deduct 4816 from 5139 and we're left with 323.
Grab the next digit (3) from the dividend, add it to 323, then carry on: 3233 / 602

Let's proceed to step 5:
3233 divided by 602 is 5 with a remainder of 223.
Write down 5 as next digit of the result. 
Result so far: 85.0
Subtract 3010 from 3233 to get 223.
Fetch the next digit (4) from the dividend, attach it to 223 and continue: 2234 / 602

Step 6:
2234 divided by 602 is 3 with a remainder of 428.
The next digit of our result is 3. 
Result so far: 853.0
If we subtract 1806 from 2234, we get 428.
Include the next digit (7) from the dividend after 428, then repeat: 4287 / 602

Moving on to step 7:
When dividing 4287 by 602, we get 7 with a remainder of 73.
Write down 7 as next digit of the result. 
Result so far: 8537.0
Deduct 4214 from 4287 and we're left with 73.
Take the next digit (7) from the dividend and append it to 73, then repeat: 737 / 602

On to step 8:
602 can be fit into 737 1 times, resulting in a remainder of 135.
Write down 1 as next digit of the result. 
Result so far: 85371.0
Subtracting 602 from 737 leaves us with 135.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1350, and continue the process.

Going ahead to step 9:
602 goes into 1350 2 times with a remainder of 146.
Put 2 as the next digit of the answer. 
Result so far: 85371.2
Subtracting 1204 from 1350 leaves us with 146.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1460, and continue the process.

On to step 10:
When dividing 1460 by 602, we get 2 with a remainder of 256.
The next digit of our result is 2. 
Result so far: 85371.22
If we subtract 1204 from 1460, we get 256.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2560, and continue the process.

The quotient of the division is 85371.22, and the remainder is 0.256.