We're dividing 74174178 by 21 
We want to divide 74174178 by 21.

Let's proceed to step 1:
If we divide 7 by 21, we get 0 and a remainder of 7.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we subtract 0 from 7, we get 7.
Take the next digit (4) from the dividend and append it to 7, then repeat: 74 / 21

Step 2:
74 divided by 21 is 3 with a remainder of 11.
The number 3 becomes the next digit in our result. 
Result so far: 3.0
If we take 63 away from 74, we end up with 11.
Grab the next digit (1) from the dividend, add it to 11, then carry on: 111 / 21

Step 3:
21 goes into 111 5 times with a remainder of 6.
Record the quotient 5 as the next digit in the result. 
Result so far: 35.0
If we subtract 105 from 111, we get 6.
Bring next digit (7) of the dividend behind the 6 and repeat the process: 67 / 21

On to step 4:
When dividing 67 by 21, we get 3 with a remainder of 4.
The next digit of our result is 3. 
Result so far: 353.0
The remainder is 4 after subtracting 63 from 67.
Include the next digit (4) from the dividend after 4, then repeat: 44 / 21

Step 5:
44 divided by 21 is 2 with a remainder of 2.
The next digit of our result is 2. 
Result so far: 3532.0
Subtract 42 from 44 to get 2.
Grab the next digit (1) from the dividend, add it to 2, then carry on: 21 / 21

Step 6:
21 can be fit into 21 1 times, resulting in a remainder of 0.
The number 1 becomes the next digit in our result. 
Result so far: 35321.0
Deduct 21 from 21 and we're left with 0.
Bring next digit (7) of the dividend behind the 0 and repeat the process: 7 / 21

On to step 7:
21 can be fit into 7 0 times, resulting in a remainder of 7.
The number 0 becomes the next digit in our result. 
Result so far: 353210.0
The remainder is 7 after subtracting 0 from 7.
Fetch the next digit (8) from the dividend, attach it to 7 and continue: 78 / 21

Advancing to step 8:
78 divided by 21 is 3 with a remainder of 15.
Record the quotient 3 as the next digit in the result. 
Result so far: 3532103.0
Subtracting 63 from 78 leaves us 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.

Let's proceed to step 9:
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: 3532103.7
Deduct 147 from 150 and we're left 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.

Moving on to step 10:
21 can be fit into 30 1 times, resulting in a remainder of 9.
Write down 1 as next digit of the result. 
Result so far: 3532103.71
Subtracting 21 from 30 leaves us with 9.
Since there are no more digits in the dividend, we add a zero to the remainder making it 90, and continue the process.

Going ahead to step 11:
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: 3532103.714
If we take 84 away from 90, we end up 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.

Moving on to step 12:
If we divide 60 by 21, we get 2 and a remainder of 18.
Use 2 as the next digit of our solution. 
Result so far: 3532103.7142
If we subtract 42 from 60, we 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.

Moving on to step 13:
When dividing 180 by 21, we get 8 with a remainder of 12.
Record the quotient 8 as the next digit in the result. 
Result so far: 3532103.71428
Subtract 168 from 180 to get 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

Going ahead to step 14:
21 can be fit into 120 5 times, resulting in a remainder of 15.
The number 5 becomes the next digit in our result. 
Result so far: 3532103.714285
Deduct 105 from 120 and we're left 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 15:
21 can be fit into 150 7 times, resulting in a remainder of 3.
Put 7 as the next digit of the answer. 
Result so far: 3532103.7142857
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.

Let's proceed to step 16:
The number 21 fits into 30 1 times, leaving a remainder of 9.
The next digit of our result is 1. 
Result so far: 3532103.71428571
If we take 21 away from 30, we end up with 9.
Since there are no more digits in the dividend, we add a zero to the remainder making it 90, and continue the process.

Our division results in 3532103.71428571 with a remaining 9e-09.