We're dividing 21954529 by 406 
The aim is to understand the frequency of 406 in 21954529.

Moving on to step 1:
If we divide 2 by 406, we get 0 and a remainder of 2.
Write down 0 as next digit of the result. 
Result so far: 0.0
The remainder is 2 after subtracting 0 from 2.
Fetch the next digit (1) from the dividend, attach it to 2 and continue: 21 / 406

Advancing to step 2:
When dividing 21 by 406, we get 0 with a remainder of 21.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 21 and we're left with 21.
Bring next digit (9) of the dividend behind the 21 and repeat the process: 219 / 406

Let's proceed to step 3:
406 can be fit into 219 0 times, resulting in a remainder of 219.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 219, we end up with 219.
Take the next digit (5) from the dividend and append it to 219, then repeat: 2195 / 406

Let's proceed to step 4:
406 goes into 2195 5 times with a remainder of 165.
Use 5 as the next digit of our solution. 
Result so far: 5.0
The remainder is 165 after subtracting 2030 from 2195.
Bring next digit (4) of the dividend behind the 165 and repeat the process: 1654 / 406

On to step 5:
406 goes into 1654 4 times with a remainder of 30.
Write down 4 as next digit of the result. 
Result so far: 54.0
Subtracting 1624 from 1654 leaves us with 30.
Include the next digit (5) from the dividend after 30, then repeat: 305 / 406

Going ahead to step 6:
406 can be fit into 305 0 times, resulting in a remainder of 305.
Record the quotient 0 as the next digit in the result. 
Result so far: 540.0
Subtracting 0 from 305 leaves us with 305.
Include the next digit (2) from the dividend after 305, then repeat: 3052 / 406

Moving on to step 7:
406 can be fit into 3052 7 times, resulting in a remainder of 210.
The next digit of our result is 7. 
Result so far: 5407.0
If we subtract 2842 from 3052, we get 210.
Append the next digit (9) from the dividend to 210 and continue with: 2109 / 406

On to step 8:
When dividing 2109 by 406, we get 5 with a remainder of 79.
The next digit of our result is 5. 
Result so far: 54075.0
Subtract 2030 from 2109 to get 79.
Since there are no more digits in the dividend, we add a zero to the remainder making it 790, and continue the process.

Let's proceed to step 9:
If we divide 790 by 406, we get 1 and a remainder of 384.
Record the quotient 1 as the next digit in the result. 
Result so far: 54075.1
If we subtract 406 from 790, we get 384.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3840, and continue the process.

Moving on to step 10:
3840 divided by 406 is 9 with a remainder of 186.
Write down 9 as next digit of the result. 
Result so far: 54075.19
The remainder is 186 after subtracting 3654 from 3840.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1860, and continue the process.

Advancing to step 11:
If we divide 1860 by 406, we get 4 and a remainder of 236.
Record the quotient 4 as the next digit in the result. 
Result so far: 54075.194
If we subtract 1624 from 1860, we get 236.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2360, and continue the process.

On to step 12:
If we divide 2360 by 406, we get 5 and a remainder of 330.
Use 5 as the next digit of our solution. 
Result so far: 54075.1945
Subtract 2030 from 2360 to get 330.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3300, and continue the process.

Advancing to step 13:
406 can be fit into 3300 8 times, resulting in a remainder of 52.
The number 8 becomes the next digit in our result. 
Result so far: 54075.19458
If we subtract 3248 from 3300, we get 52.
Since there are no more digits in the dividend, we add a zero to the remainder making it 520, and continue the process.

Going ahead to step 14:
406 can be fit into 520 1 times, resulting in a remainder of 114.
The number 1 becomes the next digit in our result. 
Result so far: 54075.194581
If we take 406 away from 520, we end up with 114.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1140, and continue the process.

Going ahead to step 15:
406 can be fit into 1140 2 times, resulting in a remainder of 328.
Use 2 as the next digit of our solution. 
Result so far: 54075.1945812
Deduct 812 from 1140 and we're left with 328.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3280, and continue the process.

On to step 16:
When dividing 3280 by 406, we get 8 with a remainder of 32.
Put 8 as the next digit of the answer. 
Result so far: 54075.19458128
Deduct 3248 from 3280 and we're left 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.

The quotient of the division is 54075.19458128, and the remainder is 3.2e-08.