981405 ÷ 21 
We want to figure out the number of times 981405 can be divided by 21.

Let's proceed to step 1:
The number 21 fits into 9 0 times, leaving a remainder of 9.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 9 leaves us with 9.
Bring next digit (8) of the dividend behind the 9 and repeat the process: 98 / 21

Let's proceed to step 2:
98 divided by 21 is 4 with a remainder of 14.
Record the quotient 4 as the next digit in the result. 
Result so far: 4.0
Subtract 84 from 98 to get 14.
Grab the next digit (1) from the dividend, add it to 14, then carry on: 141 / 21

Advancing to step 3:
The number 21 fits into 141 6 times, leaving a remainder of 15.
Put 6 as the next digit of the answer. 
Result so far: 46.0
The remainder is 15 after subtracting 126 from 141.
Bring next digit (4) of the dividend behind the 15 and repeat the process: 154 / 21

On to step 4:
21 can be fit into 154 7 times, resulting in a remainder of 7.
Use 7 as the next digit of our solution. 
Result so far: 467.0
The remainder is 7 after subtracting 147 from 154.
Fetch the next digit (0) from the dividend, attach it to 7 and continue: 70 / 21

Step 5:
21 goes into 70 3 times with a remainder of 7.
Put 3 as the next digit of the answer. 
Result so far: 4673.0
If we take 63 away from 70, we end up with 7.
Include the next digit (5) from the dividend after 7, then repeat: 75 / 21

Moving on to step 6:
75 divided by 21 is 3 with a remainder of 12.
Put 3 as the next digit of the answer. 
Result so far: 46733.0
If we take 63 away from 75, we end up with 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

On to step 7:
21 goes into 120 5 times with a remainder of 15.
The next digit of our result is 5. 
Result so far: 46733.5
If we take 105 away from 120, we end up with 15.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

Advancing to step 8:
21 can be fit into 150 7 times, resulting in a remainder of 3.
Use 7 as the next digit of our solution. 
Result so far: 46733.57
Subtract 147 from 150 to get 3.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

Going ahead to step 9:
21 goes into 30 1 times with a remainder of 9.
Write down 1 as next digit of the result. 
Result so far: 46733.571
Subtract 21 from 30 to get 9.
Since there are no more digits in the dividend, we add a zero to the remainder making it 90, and continue the process.

Let's proceed to step 10:
If we divide 90 by 21, we get 4 and a remainder of 6.
Put 4 as the next digit of the answer. 
Result so far: 46733.5714
Deduct 84 from 90 and we're left with 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Step 11:
When dividing 60 by 21, we get 2 with a remainder of 18.
Write down 2 as next digit of the result. 
Result so far: 46733.57142
Subtract 42 from 60 to get 18.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

On to step 12:
If we divide 180 by 21, we get 8 and a remainder of 12.
Put 8 as the next digit of the answer. 
Result so far: 46733.571428
Deduct 168 from 180 and we're left with 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

Advancing to step 13:
When dividing 120 by 21, we get 5 with a remainder of 15.
Use 5 as the next digit of our solution. 
Result so far: 46733.5714285
If we subtract 105 from 120, we get 15.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

Moving on to step 14:
21 can be fit into 150 7 times, resulting in a remainder of 3.
Use 7 as the next digit of our solution. 
Result so far: 46733.57142857
Subtracting 147 from 150 leaves us with 3.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

After the division, we end up with 46733.57142857 and a remainder of 3e-09.