19990892 ÷ 945 
The aim is to understand the frequency of 945 in 19990892.

Moving on to step 1:
945 can be fit into 1 0 times, resulting in a remainder of 1.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 1 to get 1.
Take the next digit (9) from the dividend and append it to 1, then repeat: 19 / 945

On to step 2:
When dividing 19 by 945, we get 0 with a remainder of 19.
Write down 0 as next digit of the result. 
Result so far: 0.0
The remainder is 19 after subtracting 0 from 19.
Bring next digit (9) of the dividend behind the 19 and repeat the process: 199 / 945

Moving on to step 3:
945 can be fit into 199 0 times, resulting in a remainder of 199.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 199, we get 199.
Fetch the next digit (9) from the dividend, attach it to 199 and continue: 1999 / 945

Let's proceed to step 4:
1999 divided by 945 is 2 with a remainder of 109.
The next digit of our result is 2. 
Result so far: 2.0
Subtracting 1890 from 1999 leaves us with 109.
Grab the next digit (0) from the dividend, add it to 109, then carry on: 1090 / 945

Going ahead to step 5:
945 can be fit into 1090 1 times, resulting in a remainder of 145.
Put 1 as the next digit of the answer. 
Result so far: 21.0
If we take 945 away from 1090, we end up with 145.
Fetch the next digit (8) from the dividend, attach it to 145 and continue: 1458 / 945

Going ahead to step 6:
1458 divided by 945 is 1 with a remainder of 513.
Put 1 as the next digit of the answer. 
Result so far: 211.0
If we take 945 away from 1458, we end up with 513.
Take the next digit (9) from the dividend and append it to 513, then repeat: 5139 / 945

Step 7:
945 can be fit into 5139 5 times, resulting in a remainder of 414.
Use 5 as the next digit of our solution. 
Result so far: 2115.0
If we subtract 4725 from 5139, we get 414.
Append the next digit (2) from the dividend to 414 and continue with: 4142 / 945

On to step 8:
If we divide 4142 by 945, we get 4 and a remainder of 362.
Write down 4 as next digit of the result. 
Result so far: 21154.0
If we take 3780 away from 4142, we end up with 362.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3620, and continue the process.

Advancing to step 9:
3620 divided by 945 is 3 with a remainder of 785.
Use 3 as the next digit of our solution. 
Result so far: 21154.3
If we subtract 2835 from 3620, we get 785.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7850, and continue the process.

Advancing to step 10:
945 goes into 7850 8 times with a remainder of 290.
Write down 8 as next digit of the result. 
Result so far: 21154.38
If we subtract 7560 from 7850, we get 290.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2900, and continue the process.

Step 11:
When dividing 2900 by 945, we get 3 with a remainder of 65.
Put 3 as the next digit of the answer. 
Result so far: 21154.383
If we subtract 2835 from 2900, we get 65.
Since there are no more digits in the dividend, we add a zero to the remainder making it 650, and continue the process.

On to step 12:
When dividing 650 by 945, we get 0 with a remainder of 650.
The next digit of our result is 0. 
Result so far: 21154.383
Deduct 0 from 650 and we're left with 650.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6500, and continue the process.

Advancing to step 13:
6500 divided by 945 is 6 with a remainder of 830.
Put 6 as the next digit of the answer. 
Result so far: 21154.38306
If we subtract 5670 from 6500, we get 830.
Since there are no more digits in the dividend, we add a zero to the remainder making it 8300, and continue the process.

On to step 14:
When dividing 8300 by 945, we get 8 with a remainder of 740.
Record the quotient 8 as the next digit in the result. 
Result so far: 21154.383068
Deduct 7560 from 8300 and we're left with 740.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7400, and continue the process.

Let's proceed to step 15:
If we divide 7400 by 945, we get 7 and a remainder of 785.
Put 7 as the next digit of the answer. 
Result so far: 21154.3830687
Subtract 6615 from 7400 to get 785.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7850, and continue the process.

Let's proceed to step 16:
945 goes into 7850 8 times with a remainder of 290.
The next digit of our result is 8. 
Result so far: 21154.38306878
If we take 7560 away from 7850, we end up with 290.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2900, and continue the process.

The final result is 21154.38306878 with a remainder of 2.9e-07.