We're dividing 21906673 by 181 
The aim is to understand the frequency of 181 in 21906673.

On to step 1:
The number 181 fits into 2 0 times, leaving a remainder of 2.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 2 after subtracting 0 from 2.
Append the next digit (1) from the dividend to 2 and continue with: 21 / 181

Advancing to step 2:
The number 181 fits into 21 0 times, leaving a remainder of 21.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 21, we get 21.
Grab the next digit (9) from the dividend, add it to 21, then carry on: 219 / 181

Let's proceed to step 3:
The number 181 fits into 219 1 times, leaving a remainder of 38.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
Subtracting 181 from 219 leaves us with 38.
Take the next digit (0) from the dividend and append it to 38, then repeat: 380 / 181

Going ahead to step 4:
380 divided by 181 is 2 with a remainder of 18.
Put 2 as the next digit of the answer. 
Result so far: 12.0
Deduct 362 from 380 and we're left with 18.
Bring next digit (6) of the dividend behind the 18 and repeat the process: 186 / 181

Going ahead to step 5:
186 divided by 181 is 1 with a remainder of 5.
Put 1 as the next digit of the answer. 
Result so far: 121.0
The remainder is 5 after subtracting 181 from 186.
Include the next digit (6) from the dividend after 5, then repeat: 56 / 181

Let's proceed to step 6:
When dividing 56 by 181, we get 0 with a remainder of 56.
Put 0 as the next digit of the answer. 
Result so far: 1210.0
Deduct 0 from 56 and we're left with 56.
Bring next digit (7) of the dividend behind the 56 and repeat the process: 567 / 181

Going ahead to step 7:
When dividing 567 by 181, we get 3 with a remainder of 24.
Use 3 as the next digit of our solution. 
Result so far: 12103.0
Deduct 543 from 567 and we're left with 24.
Bring next digit (3) of the dividend behind the 24 and repeat the process: 243 / 181

Let's proceed to step 8:
181 goes into 243 1 times with a remainder of 62.
Put 1 as the next digit of the answer. 
Result so far: 121031.0
The remainder is 62 after subtracting 181 from 243.
Since there are no more digits in the dividend, we add a zero to the remainder making it 620, and continue the process.

Step 9:
When dividing 620 by 181, we get 3 with a remainder of 77.
Put 3 as the next digit of the answer. 
Result so far: 121031.3
Subtracting 543 from 620 leaves us with 77.
Since there are no more digits in the dividend, we add a zero to the remainder making it 770, and continue the process.

Going ahead to step 10:
If we divide 770 by 181, we get 4 and a remainder of 46.
Write down 4 as next digit of the result. 
Result so far: 121031.34
If we subtract 724 from 770, we get 46.
Since there are no more digits in the dividend, we add a zero to the remainder making it 460, and continue the process.

On to step 11:
181 can be fit into 460 2 times, resulting in a remainder of 98.
The next digit of our result is 2. 
Result so far: 121031.342
Deduct 362 from 460 and we're left with 98.
Since there are no more digits in the dividend, we add a zero to the remainder making it 980, and continue the process.

Step 12:
181 goes into 980 5 times with a remainder of 75.
Put 5 as the next digit of the answer. 
Result so far: 121031.3425
If we take 905 away from 980, we end up with 75.
Since there are no more digits in the dividend, we add a zero to the remainder making it 750, and continue the process.

On to step 13:
The number 181 fits into 750 4 times, leaving a remainder of 26.
Record the quotient 4 as the next digit in the result. 
Result so far: 121031.34254
Deduct 724 from 750 and we're left with 26.
Since there are no more digits in the dividend, we add a zero to the remainder making it 260, and continue the process.

Advancing to step 14:
When dividing 260 by 181, we get 1 with a remainder of 79.
Record the quotient 1 as the next digit in the result. 
Result so far: 121031.342541
Subtract 181 from 260 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.

On to step 15:
The number 181 fits into 790 4 times, leaving a remainder of 66.
The number 4 becomes the next digit in our result. 
Result so far: 121031.3425414
The remainder is 66 after subtracting 724 from 790.
Since there are no more digits in the dividend, we add a zero to the remainder making it 660, and continue the process.

Moving on to step 16:
The number 181 fits into 660 3 times, leaving a remainder of 117.
Record the quotient 3 as the next digit in the result. 
Result so far: 121031.34254143
The remainder is 117 after subtracting 543 from 660.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1170, and continue the process.

The final result is 121031.34254143 with a remainder of 1.17e-07.