We're dividing 21345397 by 491 
We want to divide 21345397 by 491.

Moving on to step 1:
If we divide 2 by 491, we get 0 and a remainder of 2.
The next digit of our result is 0. 
Result so far: 0.0
Subtract 0 from 2 to get 2.
Grab the next digit (1) from the dividend, add it to 2, then carry on: 21 / 491

Let's proceed to step 2:
If we divide 21 by 491, we get 0 and a remainder of 21.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 21 to get 21.
Fetch the next digit (3) from the dividend, attach it to 21 and continue: 213 / 491

Let's proceed to step 3:
If we divide 213 by 491, we get 0 and a remainder of 213.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 213, we get 213.
Bring next digit (4) of the dividend behind the 213 and repeat the process: 2134 / 491

Advancing to step 4:
491 goes into 2134 4 times with a remainder of 170.
Use 4 as the next digit of our solution. 
Result so far: 4.0
Subtracting 1964 from 2134 leaves us with 170.
Append the next digit (5) from the dividend to 170 and continue with: 1705 / 491

Going ahead to step 5:
491 goes into 1705 3 times with a remainder of 232.
Put 3 as the next digit of the answer. 
Result so far: 43.0
Subtract 1473 from 1705 to get 232.
Bring next digit (3) of the dividend behind the 232 and repeat the process: 2323 / 491

Moving on to step 6:
2323 divided by 491 is 4 with a remainder of 359.
Record the quotient 4 as the next digit in the result. 
Result so far: 434.0
Deduct 1964 from 2323 and we're left with 359.
Include the next digit (9) from the dividend after 359, then repeat: 3599 / 491

Advancing to step 7:
If we divide 3599 by 491, we get 7 and a remainder of 162.
Use 7 as the next digit of our solution. 
Result so far: 4347.0
The remainder is 162 after subtracting 3437 from 3599.
Bring next digit (7) of the dividend behind the 162 and repeat the process: 1627 / 491

Moving on to step 8:
When dividing 1627 by 491, we get 3 with a remainder of 154.
Record the quotient 3 as the next digit in the result. 
Result so far: 43473.0
Deduct 1473 from 1627 and we're left with 154.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1540, and continue the process.

Advancing to step 9:
491 can be fit into 1540 3 times, resulting in a remainder of 67.
The next digit of our result is 3. 
Result so far: 43473.3
Subtract 1473 from 1540 to get 67.
Since there are no more digits in the dividend, we add a zero to the remainder making it 670, and continue the process.

On to step 10:
If we divide 670 by 491, we get 1 and a remainder of 179.
Write down 1 as next digit of the result. 
Result so far: 43473.31
Subtract 491 from 670 to get 179.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1790, and continue the process.

Advancing to step 11:
The number 491 fits into 1790 3 times, leaving a remainder of 317.
The next digit of our result is 3. 
Result so far: 43473.313
Subtracting 1473 from 1790 leaves us with 317.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3170, and continue the process.

Step 12:
When dividing 3170 by 491, we get 6 with a remainder of 224.
The next digit of our result is 6. 
Result so far: 43473.3136
If we subtract 2946 from 3170, we get 224.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2240, and continue the process.

Moving on to step 13:
491 goes into 2240 4 times with a remainder of 276.
The number 4 becomes the next digit in our result. 
Result so far: 43473.31364
Subtracting 1964 from 2240 leaves us with 276.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2760, and continue the process.

Going ahead to step 14:
2760 divided by 491 is 5 with a remainder of 305.
Put 5 as the next digit of the answer. 
Result so far: 43473.313645
If we take 2455 away from 2760, we end up with 305.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3050, and continue the process.

On to step 15:
491 goes into 3050 6 times with a remainder of 104.
The next digit of our result is 6. 
Result so far: 43473.3136456
Subtracting 2946 from 3050 leaves us with 104.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1040, and continue the process.

Going ahead to step 16:
491 goes into 1040 2 times with a remainder of 58.
Write down 2 as next digit of the result. 
Result so far: 43473.31364562
Subtract 982 from 1040 to get 58.
Since there are no more digits in the dividend, we add a zero to the remainder making it 580, and continue the process.

The final result is 43473.31364562 with a remainder of 5.8e-08.