Let's divide 151911 by 42
We want to figure out the number of times 151911 can be divided by 42.

Step 1:
When dividing 1 by 42, we get 0 with a remainder of 1.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 1 to get 1.
Take the next digit (5) from the dividend and append it to 1, then repeat: 15 / 42

Step 2:
15 divided by 42 is 0 with a remainder of 15.
Use 0 as the next digit of our solution. 
Result so far: 0.0
The remainder is 15 after subtracting 0 from 15.
Take the next digit (1) from the dividend and append it to 15, then repeat: 151 / 42

Advancing to step 3:
If we divide 151 by 42, we get 3 and a remainder of 25.
Write down 3 as next digit of the result. 
Result so far: 3.0
Subtract 126 from 151 to get 25.
Grab the next digit (9) from the dividend, add it to 25, then carry on: 259 / 42

Step 4:
42 can be fit into 259 6 times, resulting in a remainder of 7.
The next digit of our result is 6. 
Result so far: 36.0
If we take 252 away from 259, we end up with 7.
Take the next digit (1) from the dividend and append it to 7, then repeat: 71 / 42

Let's proceed to step 5:
42 goes into 71 1 times with a remainder of 29.
Use 1 as the next digit of our solution. 
Result so far: 361.0
Subtracting 42 from 71 leaves us with 29.
Bring next digit (1) of the dividend behind the 29 and repeat the process: 291 / 42

Moving on to step 6:
If we divide 291 by 42, we get 6 and a remainder of 39.
Put 6 as the next digit of the answer. 
Result so far: 3616.0
If we take 252 away from 291, we end up with 39.
Since there are no more digits in the dividend, we add a zero to the remainder making it 390, and continue the process.

Moving on to step 7:
42 goes into 390 9 times with a remainder of 12.
Use 9 as the next digit of our solution. 
Result so far: 3616.9
If we take 378 away from 390, 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.

Advancing to step 8:
If we divide 120 by 42, we get 2 and a remainder of 36.
Put 2 as the next digit of the answer. 
Result so far: 3616.92
If we subtract 84 from 120, we get 36.
Since there are no more digits in the dividend, we add a zero to the remainder making it 360, and continue the process.

Step 9:
When dividing 360 by 42, we get 8 with a remainder of 24.
Write down 8 as next digit of the result. 
Result so far: 3616.928
Subtract 336 from 360 to get 24.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

Going ahead to step 10:
The number 42 fits into 240 5 times, leaving a remainder of 30.
The number 5 becomes the next digit in our result. 
Result so far: 3616.9285
The remainder is 30 after subtracting 210 from 240.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

Moving on to step 11:
The number 42 fits into 300 7 times, leaving a remainder of 6.
The number 7 becomes the next digit in our result. 
Result so far: 3616.92857
If we subtract 294 from 300, we get 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 12:
60 divided by 42 is 1 with a remainder of 18.
Put 1 as the next digit of the answer. 
Result so far: 3616.928571
If we take 42 away from 60, we end up with 18.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

Going ahead to step 13:
180 divided by 42 is 4 with a remainder of 12.
Use 4 as the next digit of our solution. 
Result so far: 3616.9285714
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.

On to step 14:
The number 42 fits into 120 2 times, leaving a remainder of 36.
Put 2 as the next digit of the answer. 
Result so far: 3616.92857142
Subtracting 84 from 120 leaves us with 36.
Since there are no more digits in the dividend, we add a zero to the remainder making it 360, and continue the process.

The quotient of the division is 3616.92857142, and the remainder is 3.6e-08.