Let's divide 21453975 by 836
Let's see how many times 836 fits into 21453975.

Step 1:
The number 836 fits into 2 0 times, leaving a remainder of 2.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 2, we get 2.
Grab the next digit (1) from the dividend, add it to 2, then carry on: 21 / 836

On to step 2:
If we divide 21 by 836, we get 0 and a remainder of 21.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtract 0 from 21 to get 21.
Grab the next digit (4) from the dividend, add it to 21, then carry on: 214 / 836

Going ahead to step 3:
836 goes into 214 0 times with a remainder of 214.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 214, we get 214.
Include the next digit (5) from the dividend after 214, then repeat: 2145 / 836

Step 4:
When dividing 2145 by 836, we get 2 with a remainder of 473.
The number 2 becomes the next digit in our result. 
Result so far: 2.0
If we subtract 1672 from 2145, we get 473.
Bring next digit (3) of the dividend behind the 473 and repeat the process: 4733 / 836

On to step 5:
836 goes into 4733 5 times with a remainder of 553.
Put 5 as the next digit of the answer. 
Result so far: 25.0
The remainder is 553 after subtracting 4180 from 4733.
Fetch the next digit (9) from the dividend, attach it to 553 and continue: 5539 / 836

Moving on to step 6:
5539 divided by 836 is 6 with a remainder of 523.
The number 6 becomes the next digit in our result. 
Result so far: 256.0
The remainder is 523 after subtracting 5016 from 5539.
Grab the next digit (7) from the dividend, add it to 523, then carry on: 5237 / 836

Moving on to step 7:
836 can be fit into 5237 6 times, resulting in a remainder of 221.
The number 6 becomes the next digit in our result. 
Result so far: 2566.0
If we subtract 5016 from 5237, we get 221.
Grab the next digit (5) from the dividend, add it to 221, then carry on: 2215 / 836

Step 8:
836 can be fit into 2215 2 times, resulting in a remainder of 543.
Record the quotient 2 as the next digit in the result. 
Result so far: 25662.0
Subtracting 1672 from 2215 leaves us with 543.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5430, and continue the process.

Let's proceed to step 9:
When dividing 5430 by 836, we get 6 with a remainder of 414.
Record the quotient 6 as the next digit in the result. 
Result so far: 25662.6
Subtracting 5016 from 5430 leaves us with 414.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4140, and continue the process.

Going ahead to step 10:
When dividing 4140 by 836, we get 4 with a remainder of 796.
Write down 4 as next digit of the result. 
Result so far: 25662.64
Subtracting 3344 from 4140 leaves us with 796.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7960, and continue the process.

Let's proceed to step 11:
If we divide 7960 by 836, we get 9 and a remainder of 436.
Record the quotient 9 as the next digit in the result. 
Result so far: 25662.649
Deduct 7524 from 7960 and we're left with 436.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4360, and continue the process.

On to step 12:
836 goes into 4360 5 times with a remainder of 180.
Write down 5 as next digit of the result. 
Result so far: 25662.6495
Deduct 4180 from 4360 and we're left with 180.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1800, and continue the process.

Advancing to step 13:
When dividing 1800 by 836, we get 2 with a remainder of 128.
The number 2 becomes the next digit in our result. 
Result so far: 25662.64952
The remainder is 128 after subtracting 1672 from 1800.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1280, and continue the process.

Step 14:
1280 divided by 836 is 1 with a remainder of 444.
The number 1 becomes the next digit in our result. 
Result so far: 25662.649521
The remainder is 444 after subtracting 836 from 1280.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4440, and continue the process.

Going ahead to step 15:
When dividing 4440 by 836, we get 5 with a remainder of 260.
Write down 5 as next digit of the result. 
Result so far: 25662.6495215
The remainder is 260 after subtracting 4180 from 4440.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2600, and continue the process.

Step 16:
836 can be fit into 2600 3 times, resulting in a remainder of 92.
Put 3 as the next digit of the answer. 
Result so far: 25662.64952153
If we take 2508 away from 2600, we end up with 92.
Since there are no more digits in the dividend, we add a zero to the remainder making it 920, and continue the process.

The quotient of the division is 25662.64952153, and the remainder is 9.2e-08.