We divide 38994 by 21
The aim is to understand the frequency of 21 in 38994.

Advancing to step 1:
21 goes into 3 0 times with a remainder of 3.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
The remainder is 3 after subtracting 0 from 3.
Bring next digit (8) of the dividend behind the 3 and repeat the process: 38 / 21

Let's proceed to step 2:
When dividing 38 by 21, we get 1 with a remainder of 17.
Write down 1 as next digit of the result. 
Result so far: 1.0
Deduct 21 from 38 and we're left with 17.
Append the next digit (9) from the dividend to 17 and continue with: 179 / 21

Step 3:
When dividing 179 by 21, we get 8 with a remainder of 11.
Put 8 as the next digit of the answer. 
Result so far: 18.0
If we take 168 away from 179, we end up with 11.
Include the next digit (9) from the dividend after 11, then repeat: 119 / 21

On to step 4:
21 goes into 119 5 times with a remainder of 14.
The next digit of our result is 5. 
Result so far: 185.0
If we take 105 away from 119, we end up with 14.
Include the next digit (4) from the dividend after 14, then repeat: 144 / 21

Moving on to step 5:
144 divided by 21 is 6 with a remainder of 18.
The number 6 becomes the next digit in our result. 
Result so far: 1856.0
If we subtract 126 from 144, we get 18.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

Let's proceed to step 6:
21 goes into 180 8 times with a remainder of 12.
The next digit of our result is 8. 
Result so far: 1856.8
Subtracting 168 from 180 leaves us 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.

Let's proceed to step 7:
If we divide 120 by 21, we get 5 and a remainder of 15.
The next digit of our result is 5. 
Result so far: 1856.85
Deduct 105 from 120 and we're left with 15.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

Step 8:
If we divide 150 by 21, we get 7 and a remainder of 3.
Put 7 as the next digit of the answer. 
Result so far: 1856.857
Subtract 147 from 150 to get 3.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

On to step 9:
21 goes into 30 1 times with a remainder of 9.
The next digit of our result is 1. 
Result so far: 1856.8571
The remainder is 9 after subtracting 21 from 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 90, and continue the process.

Advancing to step 10:
When dividing 90 by 21, we get 4 with a remainder of 6.
Put 4 as the next digit of the answer. 
Result so far: 1856.85714
Deduct 84 from 90 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.

Let's proceed to step 11:
The number 21 fits into 60 2 times, leaving a remainder of 18.
Put 2 as the next digit of the answer. 
Result so far: 1856.857142
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.

Advancing to step 12:
21 goes into 180 8 times with a remainder of 12.
Use 8 as the next digit of our solution. 
Result so far: 1856.8571428
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.

Advancing to step 13:
21 goes into 120 5 times with a remainder of 15.
Record the quotient 5 as the next digit in the result. 
Result so far: 1856.85714285
If we subtract 105 from 120, 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.

The quotient of the division is 1856.85714285, and the remainder is 1.5e-08.