21257486 ÷ 984 
Our goal is to divide 21257486 by 984.

Moving on to step 1:
984 goes into 2 0 times with a remainder of 2.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtract 0 from 2 to get 2.
Take the next digit (1) from the dividend and append it to 2, then repeat: 21 / 984

Advancing to step 2:
The number 984 fits into 21 0 times, leaving a remainder of 21.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 21, we get 21.
Append the next digit (2) from the dividend to 21 and continue with: 212 / 984

Advancing to step 3:
The number 984 fits into 212 0 times, leaving a remainder of 212.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 212, we end up with 212.
Append the next digit (5) from the dividend to 212 and continue with: 2125 / 984

Let's proceed to step 4:
984 can be fit into 2125 2 times, resulting in a remainder of 157.
Write down 2 as next digit of the result. 
Result so far: 2.0
Deduct 1968 from 2125 and we're left with 157.
Append the next digit (7) from the dividend to 157 and continue with: 1577 / 984

Going ahead to step 5:
984 can be fit into 1577 1 times, resulting in a remainder of 593.
Put 1 as the next digit of the answer. 
Result so far: 21.0
If we take 984 away from 1577, we end up with 593.
Grab the next digit (4) from the dividend, add it to 593, then carry on: 5934 / 984

Advancing to step 6:
When dividing 5934 by 984, we get 6 with a remainder of 30.
The number 6 becomes the next digit in our result. 
Result so far: 216.0
If we subtract 5904 from 5934, we get 30.
Fetch the next digit (8) from the dividend, attach it to 30 and continue: 308 / 984

Going ahead to step 7:
If we divide 308 by 984, we get 0 and a remainder of 308.
Put 0 as the next digit of the answer. 
Result so far: 2160.0
If we take 0 away from 308, we end up with 308.
Bring next digit (6) of the dividend behind the 308 and repeat the process: 3086 / 984

On to step 8:
If we divide 3086 by 984, we get 3 and a remainder of 134.
The number 3 becomes the next digit in our result. 
Result so far: 21603.0
If we subtract 2952 from 3086, we get 134.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1340, and continue the process.

Going ahead to step 9:
1340 divided by 984 is 1 with a remainder of 356.
Write down 1 as next digit of the result. 
Result so far: 21603.1
Deduct 984 from 1340 and we're left with 356.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3560, and continue the process.

Going ahead to step 10:
If we divide 3560 by 984, we get 3 and a remainder of 608.
Put 3 as the next digit of the answer. 
Result so far: 21603.13
Subtract 2952 from 3560 to get 608.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6080, and continue the process.

Advancing to step 11:
984 goes into 6080 6 times with a remainder of 176.
Record the quotient 6 as the next digit in the result. 
Result so far: 21603.136
Subtracting 5904 from 6080 leaves us with 176.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1760, and continue the process.

Let's proceed to step 12:
When dividing 1760 by 984, we get 1 with a remainder of 776.
Use 1 as the next digit of our solution. 
Result so far: 21603.1361
Deduct 984 from 1760 and we're left with 776.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7760, and continue the process.

On to step 13:
984 can be fit into 7760 7 times, resulting in a remainder of 872.
The next digit of our result is 7. 
Result so far: 21603.13617
If we subtract 6888 from 7760, we get 872.
Since there are no more digits in the dividend, we add a zero to the remainder making it 8720, and continue the process.

Moving on to step 14:
When dividing 8720 by 984, we get 8 with a remainder of 848.
Put 8 as the next digit of the answer. 
Result so far: 21603.136178
Deduct 7872 from 8720 and we're left with 848.
Since there are no more digits in the dividend, we add a zero to the remainder making it 8480, and continue the process.

Going ahead to step 15:
If we divide 8480 by 984, we get 8 and a remainder of 608.
Record the quotient 8 as the next digit in the result. 
Result so far: 21603.1361788
Deduct 7872 from 8480 and we're left with 608.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6080, and continue the process.

In conclusion, the division gives 21603.1361788 with a balance of 6.08e-06.