We divide 51603211 by 853
We want to figure out the number of times 51603211 can be divided by 853.

Going ahead to step 1:
5 divided by 853 is 0 with a remainder of 5.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 5 after subtracting 0 from 5.
Include the next digit (1) from the dividend after 5, then repeat: 51 / 853

Moving on to step 2:
If we divide 51 by 853, we get 0 and 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.
Bring next digit (6) of the dividend behind the 51 and repeat the process: 516 / 853

Moving on to step 3:
If we divide 516 by 853, we get 0 and a remainder of 516.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 516, we get 516.
Fetch the next digit (0) from the dividend, attach it to 516 and continue: 5160 / 853

Let's proceed to step 4:
853 goes into 5160 6 times with a remainder of 42.
Use 6 as the next digit of our solution. 
Result so far: 6.0
Subtracting 5118 from 5160 leaves us with 42.
Take the next digit (3) from the dividend and append it to 42, then repeat: 423 / 853

Moving on to step 5:
423 divided by 853 is 0 with a remainder of 423.
The number 0 becomes the next digit in our result. 
Result so far: 60.0
If we take 0 away from 423, we end up with 423.
Include the next digit (2) from the dividend after 423, then repeat: 4232 / 853

On to step 6:
853 goes into 4232 4 times with a remainder of 820.
Record the quotient 4 as the next digit in the result. 
Result so far: 604.0
Deduct 3412 from 4232 and we're left with 820.
Include the next digit (1) from the dividend after 820, then repeat: 8201 / 853

Moving on to step 7:
853 can be fit into 8201 9 times, resulting in a remainder of 524.
Put 9 as the next digit of the answer. 
Result so far: 6049.0
If we subtract 7677 from 8201, we get 524.
Grab the next digit (1) from the dividend, add it to 524, then carry on: 5241 / 853

On to step 8:
If we divide 5241 by 853, we get 6 and a remainder of 123.
Write down 6 as next digit of the result. 
Result so far: 60496.0
Subtract 5118 from 5241 to get 123.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1230, and continue the process.

Moving on to step 9:
When dividing 1230 by 853, we get 1 with a remainder of 377.
The next digit of our result is 1. 
Result so far: 60496.1
If we subtract 853 from 1230, we get 377.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3770, and continue the process.

Step 10:
If we divide 3770 by 853, we get 4 and a remainder of 358.
The next digit of our result is 4. 
Result so far: 60496.14
Deduct 3412 from 3770 and we're left with 358.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3580, and continue the process.

Let's proceed to step 11:
853 can be fit into 3580 4 times, resulting in a remainder of 168.
The next digit of our result is 4. 
Result so far: 60496.144
If we subtract 3412 from 3580, we get 168.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1680, and continue the process.

Our division results in 60496.144 with a remaining 0.0168.