We're dividing 631403 by 42 
The aim is to understand the frequency of 42 in 631403.

Let's proceed to step 1:
When dividing 6 by 42, we get 0 with a remainder of 6.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 6 and we're left with 6.
Bring next digit (3) of the dividend behind the 6 and repeat the process: 63 / 42

Let's proceed to step 2:
42 can be fit into 63 1 times, resulting in a remainder of 21.
Put 1 as the next digit of the answer. 
Result so far: 1.0
If we subtract 42 from 63, we get 21.
Append the next digit (1) from the dividend to 21 and continue with: 211 / 42

On to step 3:
When dividing 211 by 42, we get 5 with a remainder of 1.
The next digit of our result is 5. 
Result so far: 15.0
Subtracting 210 from 211 leaves us with 1.
Bring next digit (4) of the dividend behind the 1 and repeat the process: 14 / 42

Advancing to step 4:
If we divide 14 by 42, we get 0 and a remainder of 14.
The next digit of our result is 0. 
Result so far: 150.0
Deduct 0 from 14 and we're left with 14.
Append the next digit (0) from the dividend to 14 and continue with: 140 / 42

Advancing to step 5:
140 divided by 42 is 3 with a remainder of 14.
The next digit of our result is 3. 
Result so far: 1503.0
Subtracting 126 from 140 leaves us with 14.
Include the next digit (3) from the dividend after 14, then repeat: 143 / 42

Step 6:
If we divide 143 by 42, we get 3 and a remainder of 17.
Write down 3 as next digit of the result. 
Result so far: 15033.0
If we subtract 126 from 143, 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.

Going ahead to step 7:
When dividing 170 by 42, we get 4 with a remainder of 2.
The next digit of our result is 4. 
Result so far: 15033.4
If we subtract 168 from 170, we get 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Step 8:
The number 42 fits into 20 0 times, leaving a remainder of 20.
The number 0 becomes the next digit in our result. 
Result so far: 15033.4
The remainder is 20 after subtracting 0 from 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:
When dividing 200 by 42, we get 4 with a remainder of 32.
Put 4 as the next digit of the answer. 
Result so far: 15033.404
If we take 168 away from 200, we end up with 32.
Since there are no more digits in the dividend, we add a zero to the remainder making it 320, and continue the process.

Step 10:
42 can be fit into 320 7 times, resulting in a remainder of 26.
The next digit of our result is 7. 
Result so far: 15033.4047
Subtract 294 from 320 to get 26.
Since there are no more digits in the dividend, we add a zero to the remainder making it 260, and continue the process.

Step 11:
When dividing 260 by 42, we get 6 with a remainder of 8.
Write down 6 as next digit of the result. 
Result so far: 15033.40476
If we take 252 away from 260, we end up with 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Going ahead to step 12:
When dividing 80 by 42, we get 1 with a remainder of 38.
Record the quotient 1 as the next digit in the result. 
Result so far: 15033.404761
If we take 42 away from 80, we end up with 38.
Since there are no more digits in the dividend, we add a zero to the remainder making it 380, and continue the process.

Step 13:
If we divide 380 by 42, we get 9 and a remainder of 2.
Put 9 as the next digit of the answer. 
Result so far: 15033.4047619
Subtracting 378 from 380 leaves us with 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Advancing to step 14:
42 goes into 20 0 times with a remainder of 20.
Record the quotient 0 as the next digit in the result. 
Result so far: 15033.4047619
If we subtract 0 from 20, we get 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

The final result is 15033.4047619 with a remainder of 2e-08.