38617553 divided by 420 
The aim is to understand the frequency of 420 in 38617553.

Step 1:
When dividing 3 by 420, we get 0 with a remainder of 3.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 3 leaves us with 3.
Bring next digit (8) of the dividend behind the 3 and repeat the process: 38 / 420

Let's proceed to step 2:
When dividing 38 by 420, we get 0 with a remainder of 38.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 38, we end up with 38.
Append the next digit (6) from the dividend to 38 and continue with: 386 / 420

On to step 3:
If we divide 386 by 420, we get 0 and a remainder of 386.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 386 to get 386.
Grab the next digit (1) from the dividend, add it to 386, then carry on: 3861 / 420

Going ahead to step 4:
420 can be fit into 3861 9 times, resulting in a remainder of 81.
Put 9 as the next digit of the answer. 
Result so far: 9.0
If we subtract 3780 from 3861, we get 81.
Include the next digit (7) from the dividend after 81, then repeat: 817 / 420

Step 5:
The number 420 fits into 817 1 times, leaving a remainder of 397.
Use 1 as the next digit of our solution. 
Result so far: 91.0
If we take 420 away from 817, we end up with 397.
Take the next digit (5) from the dividend and append it to 397, then repeat: 3975 / 420

Step 6:
The number 420 fits into 3975 9 times, leaving a remainder of 195.
The number 9 becomes the next digit in our result. 
Result so far: 919.0
If we subtract 3780 from 3975, we get 195.
Include the next digit (5) from the dividend after 195, then repeat: 1955 / 420

Advancing to step 7:
1955 divided by 420 is 4 with a remainder of 275.
Record the quotient 4 as the next digit in the result. 
Result so far: 9194.0
If we take 1680 away from 1955, we end up with 275.
Bring next digit (3) of the dividend behind the 275 and repeat the process: 2753 / 420

Moving on to step 8:
2753 divided by 420 is 6 with a remainder of 233.
The number 6 becomes the next digit in our result. 
Result so far: 91946.0
If we take 2520 away from 2753, we end up with 233.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2330, and continue the process.

On to step 9:
If we divide 2330 by 420, we get 5 and a remainder of 230.
Write down 5 as next digit of the result. 
Result so far: 91946.5
Deduct 2100 from 2330 and we're left with 230.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2300, and continue the process.

Let's proceed to step 10:
The number 420 fits into 2300 5 times, leaving a remainder of 200.
Use 5 as the next digit of our solution. 
Result so far: 91946.55
Deduct 2100 from 2300 and we're left with 200.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2000, and continue the process.

The quotient of the division is 91946.55, and the remainder is 0.2.