Let's divide 4021278 by 155
We're looking to find how many times 155 goes into 4021278.

Step 1:
If we divide 4 by 155, we get 0 and a remainder of 4.
Record the quotient 0 as the next digit in 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 / 155

Let's proceed to step 2:
If we divide 40 by 155, we get 0 and a remainder of 40.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtracting 0 from 40 leaves us with 40.
Take the next digit (2) from the dividend and append it to 40, then repeat: 402 / 155

Advancing to step 3:
402 divided by 155 is 2 with a remainder of 92.
Put 2 as the next digit of the answer. 
Result so far: 2.0
The remainder is 92 after subtracting 310 from 402.
Bring next digit (1) of the dividend behind the 92 and repeat the process: 921 / 155

Step 4:
If we divide 921 by 155, we get 5 and a remainder of 146.
Use 5 as the next digit of our solution. 
Result so far: 25.0
If we subtract 775 from 921, we get 146.
Bring next digit (2) of the dividend behind the 146 and repeat the process: 1462 / 155

On to step 5:
155 goes into 1462 9 times with a remainder of 67.
Put 9 as the next digit of the answer. 
Result so far: 259.0
The remainder is 67 after subtracting 1395 from 1462.
Bring next digit (7) of the dividend behind the 67 and repeat the process: 677 / 155

Step 6:
677 divided by 155 is 4 with a remainder of 57.
The number 4 becomes the next digit in our result. 
Result so far: 2594.0
Subtracting 620 from 677 leaves us with 57.
Bring next digit (8) of the dividend behind the 57 and repeat the process: 578 / 155

Going ahead to step 7:
578 divided by 155 is 3 with a remainder of 113.
The number 3 becomes the next digit in our result. 
Result so far: 25943.0
Subtracting 465 from 578 leaves us with 113.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1130, and continue the process.

Going ahead to step 8:
1130 divided by 155 is 7 with a remainder of 45.
The number 7 becomes the next digit in our result. 
Result so far: 25943.7
Subtracting 1085 from 1130 leaves us with 45.
Since there are no more digits in the dividend, we add a zero to the remainder making it 450, and continue the process.

Moving on to step 9:
155 goes into 450 2 times with a remainder of 140.
Record the quotient 2 as the next digit in the result. 
Result so far: 25943.72
Subtract 310 from 450 to get 140.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1400, and continue the process.

Going ahead to step 10:
155 goes into 1400 9 times with a remainder of 5.
The number 9 becomes the next digit in our result. 
Result so far: 25943.729
Subtract 1395 from 1400 to get 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Advancing to step 11:
When dividing 50 by 155, we get 0 with a remainder of 50.
Use 0 as the next digit of our solution. 
Result so far: 25943.729
The remainder is 50 after subtracting 0 from 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

Moving on to step 12:
155 can be fit into 500 3 times, resulting in a remainder of 35.
Write down 3 as next digit of the result. 
Result so far: 25943.72903
Subtract 465 from 500 to get 35.
Since there are no more digits in the dividend, we add a zero to the remainder making it 350, and continue the process.

Step 13:
350 divided by 155 is 2 with a remainder of 40.
The number 2 becomes the next digit in our result. 
Result so far: 25943.729032
Deduct 310 from 350 and we're left 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.

Let's proceed to step 14:
If we divide 400 by 155, we get 2 and a remainder of 90.
The number 2 becomes the next digit in our result. 
Result so far: 25943.7290322
Subtract 310 from 400 to get 90.
Since there are no more digits in the dividend, we add a zero to the remainder making it 900, and continue the process.

The final outcome is 25943.7290322, with a leftover of 9e-07.