We're dividing 121377 by 40 
We want to divide 121377 by 40.

Advancing to step 1:
40 goes into 1 0 times with a remainder of 1.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 1 after subtracting 0 from 1.
Append the next digit (2) from the dividend to 1 and continue with: 12 / 40

On to step 2:
If we divide 12 by 40, we get 0 and a remainder of 12.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 12 to get 12.
Include the next digit (1) from the dividend after 12, then repeat: 121 / 40

Going ahead to step 3:
40 goes into 121 3 times with a remainder of 1.
Put 3 as the next digit of the answer. 
Result so far: 3.0
Subtract 120 from 121 to get 1.
Append the next digit (3) from the dividend to 1 and continue with: 13 / 40

Advancing to step 4:
13 divided by 40 is 0 with a remainder of 13.
Record the quotient 0 as the next digit in the result. 
Result so far: 30.0
If we take 0 away from 13, we end up with 13.
Include the next digit (7) from the dividend after 13, then repeat: 137 / 40

On to step 5:
40 can be fit into 137 3 times, resulting in a remainder of 17.
Use 3 as the next digit of our solution. 
Result so far: 303.0
The remainder is 17 after subtracting 120 from 137.
Append the next digit (7) from the dividend to 17 and continue with: 177 / 40

Step 6:
40 can be fit into 177 4 times, resulting in a remainder of 17.
The number 4 becomes the next digit in our result. 
Result so far: 3034.0
If we subtract 160 from 177, we get 17.
Since there are no more digits in the dividend, we add a zero to the remainder making it 170, and continue the process.

Moving on to step 7:
The number 40 fits into 170 4 times, leaving a remainder of 10.
Record the quotient 4 as the next digit in the result. 
Result so far: 3034.4
Deduct 160 from 170 and we're left with 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Advancing to step 8:
40 can be fit into 100 2 times, resulting in a remainder of 20.
Put 2 as the next digit of the answer. 
Result so far: 3034.42
Subtracting 80 from 100 leaves us with 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Advancing to step 9:
200 divided by 40 is 5 with a remainder of 0.
The number 5 becomes the next digit in our result. 
Result so far: 3034.425
The remainder is 0 after subtracting 200 from 200.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Step 10:
40 goes into 0 0 times with a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 3034.425
If we subtract 0 from 0, we get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

On to step 11:
The number 40 fits into 0 0 times, leaving a remainder of 0.
The next digit of our result is 0. 
Result so far: 3034.425
Subtract 0 from 0 to get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Our division results in 3034.425 with a remaining 0.0.