63843089 ÷ 945 
The aim is to understand the frequency of 945 in 63843089.

Advancing to step 1:
If we divide 6 by 945, we get 0 and a remainder of 6.
The next digit of our result is 0. 
Result so far: 0.0
Subtract 0 from 6 to get 6.
Grab the next digit (3) from the dividend, add it to 6, then carry on: 63 / 945

Step 2:
945 goes into 63 0 times with a remainder of 63.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 63 and we're left with 63.
Take the next digit (8) from the dividend and append it to 63, then repeat: 638 / 945

Advancing to step 3:
The number 945 fits into 638 0 times, leaving a remainder of 638.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 638, we end up with 638.
Include the next digit (4) from the dividend after 638, then repeat: 6384 / 945

Advancing to step 4:
6384 divided by 945 is 6 with a remainder of 714.
Record the quotient 6 as the next digit in the result. 
Result so far: 6.0
The remainder is 714 after subtracting 5670 from 6384.
Bring next digit (3) of the dividend behind the 714 and repeat the process: 7143 / 945

On to step 5:
945 goes into 7143 7 times with a remainder of 528.
Put 7 as the next digit of the answer. 
Result so far: 67.0
Deduct 6615 from 7143 and we're left with 528.
Fetch the next digit (0) from the dividend, attach it to 528 and continue: 5280 / 945

Let's proceed to step 6:
5280 divided by 945 is 5 with a remainder of 555.
The next digit of our result is 5. 
Result so far: 675.0
Subtract 4725 from 5280 to get 555.
Append the next digit (8) from the dividend to 555 and continue with: 5558 / 945

Let's proceed to step 7:
If we divide 5558 by 945, we get 5 and a remainder of 833.
Write down 5 as next digit of the result. 
Result so far: 6755.0
Deduct 4725 from 5558 and we're left with 833.
Grab the next digit (9) from the dividend, add it to 833, then carry on: 8339 / 945

On to step 8:
8339 divided by 945 is 8 with a remainder of 779.
Write down 8 as next digit of the result. 
Result so far: 67558.0
The remainder is 779 after subtracting 7560 from 8339.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7790, and continue the process.

On to step 9:
7790 divided by 945 is 8 with a remainder of 230.
The number 8 becomes the next digit in our result. 
Result so far: 67558.8
If we take 7560 away from 7790, we end up 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.

On to step 10:
If we divide 2300 by 945, we get 2 and a remainder of 410.
The number 2 becomes the next digit in our result. 
Result so far: 67558.82
The remainder is 410 after subtracting 1890 from 2300.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4100, and continue the process.

Step 11:
If we divide 4100 by 945, we get 4 and a remainder of 320.
The next digit of our result is 4. 
Result so far: 67558.824
Subtracting 3780 from 4100 leaves us with 320.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3200, and continue the process.

Going ahead to step 12:
945 goes into 3200 3 times with a remainder of 365.
Use 3 as the next digit of our solution. 
Result so far: 67558.8243
Subtract 2835 from 3200 to get 365.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3650, and continue the process.

Advancing to step 13:
The number 945 fits into 3650 3 times, leaving a remainder of 815.
The next digit of our result is 3. 
Result so far: 67558.82433
If we subtract 2835 from 3650, we get 815.
Since there are no more digits in the dividend, we add a zero to the remainder making it 8150, and continue the process.

Our division results in 67558.82433 with a remaining 0.000815.