We look at the division of 53265274 by 210 
We want to figure out the number of times 53265274 can be divided by 210.

Let's proceed to step 1:
210 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
Deduct 0 from 5 and we're left with 5.
Append the next digit (3) from the dividend to 5 and continue with: 53 / 210

On to step 2:
The number 210 fits into 53 0 times, leaving a remainder of 53.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 53 after subtracting 0 from 53.
Take the next digit (2) from the dividend and append it to 53, then repeat: 532 / 210

Step 3:
When dividing 532 by 210, we get 2 with a remainder of 112.
Use 2 as the next digit of our solution. 
Result so far: 2.0
Subtracting 420 from 532 leaves us with 112.
Fetch the next digit (6) from the dividend, attach it to 112 and continue: 1126 / 210

On to step 4:
210 can be fit into 1126 5 times, resulting in a remainder of 76.
The next digit of our result is 5. 
Result so far: 25.0
Subtract 1050 from 1126 to get 76.
Include the next digit (5) from the dividend after 76, then repeat: 765 / 210

Moving on to step 5:
The number 210 fits into 765 3 times, leaving a remainder of 135.
Record the quotient 3 as the next digit in the result. 
Result so far: 253.0
The remainder is 135 after subtracting 630 from 765.
Take the next digit (2) from the dividend and append it to 135, then repeat: 1352 / 210

Advancing to step 6:
The number 210 fits into 1352 6 times, leaving a remainder of 92.
Record the quotient 6 as the next digit in the result. 
Result so far: 2536.0
Deduct 1260 from 1352 and we're left with 92.
Fetch the next digit (7) from the dividend, attach it to 92 and continue: 927 / 210

Advancing to step 7:
927 divided by 210 is 4 with a remainder of 87.
Use 4 as the next digit of our solution. 
Result so far: 25364.0
Subtracting 840 from 927 leaves us with 87.
Take the next digit (4) from the dividend and append it to 87, then repeat: 874 / 210

Let's proceed to step 8:
210 can be fit into 874 4 times, resulting in a remainder of 34.
The number 4 becomes the next digit in our result. 
Result so far: 253644.0
Subtracting 840 from 874 leaves us with 34.
Since there are no more digits in the dividend, we add a zero to the remainder making it 340, and continue the process.

Going ahead to step 9:
When dividing 340 by 210, we get 1 with a remainder of 130.
The next digit of our result is 1. 
Result so far: 253644.1
Subtract 210 from 340 to get 130.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1300, and continue the process.

Going ahead to step 10:
When dividing 1300 by 210, we get 6 with a remainder of 40.
The next digit of our result is 6. 
Result so far: 253644.16
Deduct 1260 from 1300 and we're left 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.

Let's proceed to step 11:
If we divide 400 by 210, we get 1 and a remainder of 190.
Put 1 as the next digit of the answer. 
Result so far: 253644.161
The remainder is 190 after subtracting 210 from 400.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1900, and continue the process.

On to step 12:
If we divide 1900 by 210, we get 9 and a remainder of 10.
Put 9 as the next digit of the answer. 
Result so far: 253644.1619
If we subtract 1890 from 1900, we get 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Going ahead to step 13:
The number 210 fits into 100 0 times, leaving a remainder of 100.
Write down 0 as next digit of the result. 
Result so far: 253644.1619
Subtract 0 from 100 to 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.

Moving on to step 14:
1000 divided by 210 is 4 with a remainder of 160.
The number 4 becomes the next digit in our result. 
Result so far: 253644.161904
Deduct 840 from 1000 and we're left with 160.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1600, and continue the process.

Step 15:
When dividing 1600 by 210, we get 7 with a remainder of 130.
Put 7 as the next digit of the answer. 
Result so far: 253644.1619047
The remainder is 130 after subtracting 1470 from 1600.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1300, and continue the process.

Step 16:
210 goes into 1300 6 times with a remainder of 40.
The number 6 becomes the next digit in our result. 
Result so far: 253644.16190476
Deduct 1260 from 1300 and we're left 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.

Our division results in 253644.16190476 with a remaining 4e-08.