We look at the division of 400121 by 74 
We're looking to find how many times 74 goes into 400121.

Going ahead to step 1:
74 can be fit into 4 0 times, resulting in a remainder of 4.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 4 to get 4.
Append the next digit (0) from the dividend to 4 and continue with: 40 / 74

Going ahead to step 2:
If we divide 40 by 74, we get 0 and a remainder of 40.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 40 and we're left with 40.
Bring next digit (0) of the dividend behind the 40 and repeat the process: 400 / 74

Going ahead to step 3:
400 divided by 74 is 5 with a remainder of 30.
Use 5 as the next digit of our solution. 
Result so far: 5.0
Subtracting 370 from 400 leaves us with 30.
Append the next digit (1) from the dividend to 30 and continue with: 301 / 74

On to step 4:
The number 74 fits into 301 4 times, leaving a remainder of 5.
Record the quotient 4 as the next digit in the result. 
Result so far: 54.0
If we subtract 296 from 301, we get 5.
Bring next digit (2) of the dividend behind the 5 and repeat the process: 52 / 74

Moving on to step 5:
If we divide 52 by 74, we get 0 and a remainder of 52.
Put 0 as the next digit of the answer. 
Result so far: 540.0
Subtracting 0 from 52 leaves us with 52.
Fetch the next digit (1) from the dividend, attach it to 52 and continue: 521 / 74

Step 6:
521 divided by 74 is 7 with a remainder of 3.
Record the quotient 7 as the next digit in the result. 
Result so far: 5407.0
The remainder is 3 after subtracting 518 from 521.
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 7:
When dividing 30 by 74, we get 0 with a remainder of 30.
The next digit of our result is 0. 
Result so far: 5407.0
If we subtract 0 from 30, we get 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

On to step 8:
74 goes into 300 4 times with a remainder of 4.
Write down 4 as next digit of the result. 
Result so far: 5407.04
The remainder is 4 after subtracting 296 from 300.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Let's proceed to step 9:
The number 74 fits into 40 0 times, leaving a remainder of 40.
Put 0 as the next digit of the answer. 
Result so far: 5407.04
Subtract 0 from 40 to get 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Advancing to step 10:
When dividing 400 by 74, we get 5 with a remainder of 30.
Put 5 as the next digit of the answer. 
Result so far: 5407.0405
Deduct 370 from 400 and we're left with 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

Step 11:
74 goes into 300 4 times with a remainder of 4.
The number 4 becomes the next digit in our result. 
Result so far: 5407.04054
Subtract 296 from 300 to get 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Let's proceed to step 12:
74 can be fit into 40 0 times, resulting in a remainder of 40.
Put 0 as the next digit of the answer. 
Result so far: 5407.04054
If we take 0 away from 40, we end up with 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Advancing to step 13:
The number 74 fits into 400 5 times, leaving a remainder of 30.
The next digit of our result is 5. 
Result so far: 5407.0405405
Deduct 370 from 400 and we're left with 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

Step 14:
When dividing 300 by 74, we get 4 with a remainder of 4.
The next digit of our result is 4. 
Result so far: 5407.04054054
Subtract 296 from 300 to get 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

The final outcome is 5407.04054054, with a leftover of 4e-09.