We look at the division of 133449 by 42 
Let's see how many times 42 fits into 133449.

Advancing to step 1:
1 divided by 42 is 0 with a remainder of 1.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 1 and we're left with 1.
Include the next digit (3) from the dividend after 1, then repeat: 13 / 42

Step 2:
When dividing 13 by 42, we get 0 with a remainder of 13.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 13, we end up with 13.
Take the next digit (3) from the dividend and append it to 13, then repeat: 133 / 42

Let's proceed to step 3:
If we divide 133 by 42, we get 3 and a remainder of 7.
Record the quotient 3 as the next digit in the result. 
Result so far: 3.0
Subtract 126 from 133 to get 7.
Include the next digit (4) from the dividend after 7, then repeat: 74 / 42

Let's proceed to step 4:
When dividing 74 by 42, we get 1 with a remainder of 32.
The next digit of our result is 1. 
Result so far: 31.0
Deduct 42 from 74 and we're left with 32.
Include the next digit (4) from the dividend after 32, then repeat: 324 / 42

Let's proceed to step 5:
When dividing 324 by 42, we get 7 with a remainder of 30.
The next digit of our result is 7. 
Result so far: 317.0
Subtract 294 from 324 to get 30.
Bring next digit (9) of the dividend behind the 30 and repeat the process: 309 / 42

Step 6:
If we divide 309 by 42, we get 7 and a remainder of 15.
Use 7 as the next digit of our solution. 
Result so far: 3177.0
If we subtract 294 from 309, we get 15.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

Going ahead to step 7:
When dividing 150 by 42, we get 3 with a remainder of 24.
Record the quotient 3 as the next digit in the result. 
Result so far: 3177.3
Subtracting 126 from 150 leaves us with 24.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

Moving on to step 8:
42 can be fit into 240 5 times, resulting in a remainder of 30.
The number 5 becomes the next digit in our result. 
Result so far: 3177.35
If we subtract 210 from 240, 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 9:
The number 42 fits into 300 7 times, leaving a remainder of 6.
Record the quotient 7 as the next digit in the result. 
Result so far: 3177.357
Deduct 294 from 300 and we're left 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 10:
When dividing 60 by 42, we get 1 with a remainder of 18.
The number 1 becomes the next digit in our result. 
Result so far: 3177.3571
The remainder is 18 after subtracting 42 from 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

On to step 11:
42 goes into 180 4 times with a remainder of 12.
Record the quotient 4 as the next digit in the result. 
Result so far: 3177.35714
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.

Step 12:
The number 42 fits into 120 2 times, leaving a remainder of 36.
The number 2 becomes the next digit in our result. 
Result so far: 3177.357142
The remainder is 36 after subtracting 84 from 120.
Since there are no more digits in the dividend, we add a zero to the remainder making it 360, and continue the process.

Step 13:
42 can be fit into 360 8 times, resulting in a remainder of 24.
The number 8 becomes the next digit in our result. 
Result so far: 3177.3571428
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.

On to step 14:
42 goes into 240 5 times with a remainder of 30.
Write down 5 as next digit of the result. 
Result so far: 3177.35714285
Deduct 210 from 240 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.

After the division, we end up with 3177.35714285 and a remainder of 3e-08.