We're dividing 51649596 by 945 
The aim is to understand the frequency of 945 in 51649596.

Step 1:
If we divide 5 by 945, we get 0 and a remainder of 5.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 5, we end up with 5.
Fetch the next digit (1) from the dividend, attach it to 5 and continue: 51 / 945

Advancing to step 2:
51 divided by 945 is 0 with a remainder of 51.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 51 to get 51.
Grab the next digit (6) from the dividend, add it to 51, then carry on: 516 / 945

On to step 3:
945 goes into 516 0 times with a remainder of 516.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we subtract 0 from 516, we get 516.
Append the next digit (4) from the dividend to 516 and continue with: 5164 / 945

On to step 4:
5164 divided by 945 is 5 with a remainder of 439.
Write down 5 as next digit of the result. 
Result so far: 5.0
If we subtract 4725 from 5164, we get 439.
Bring next digit (9) of the dividend behind the 439 and repeat the process: 4399 / 945

Going ahead to step 5:
945 can be fit into 4399 4 times, resulting in a remainder of 619.
Put 4 as the next digit of the answer. 
Result so far: 54.0
Subtracting 3780 from 4399 leaves us with 619.
Take the next digit (5) from the dividend and append it to 619, then repeat: 6195 / 945

On to step 6:
The number 945 fits into 6195 6 times, leaving a remainder of 525.
Record the quotient 6 as the next digit in the result. 
Result so far: 546.0
Deduct 5670 from 6195 and we're left with 525.
Grab the next digit (9) from the dividend, add it to 525, then carry on: 5259 / 945

On to step 7:
The number 945 fits into 5259 5 times, leaving a remainder of 534.
Write down 5 as next digit of the result. 
Result so far: 5465.0
Deduct 4725 from 5259 and we're left with 534.
Grab the next digit (6) from the dividend, add it to 534, then carry on: 5346 / 945

Going ahead to step 8:
If we divide 5346 by 945, we get 5 and a remainder of 621.
The number 5 becomes the next digit in our result. 
Result so far: 54655.0
If we take 4725 away from 5346, we end up with 621.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6210, and continue the process.

Let's proceed to step 9:
6210 divided by 945 is 6 with a remainder of 540.
Put 6 as the next digit of the answer. 
Result so far: 54655.6
If we take 5670 away from 6210, we end up with 540.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5400, and continue the process.

On to step 10:
5400 divided by 945 is 5 with a remainder of 675.
Record the quotient 5 as the next digit in the result. 
Result so far: 54655.65
Deduct 4725 from 5400 and we're left with 675.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6750, and continue the process.

On to step 11:
945 can be fit into 6750 7 times, resulting in a remainder of 135.
Use 7 as the next digit of our solution. 
Result so far: 54655.657
Subtract 6615 from 6750 to get 135.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1350, and continue the process.

On to step 12:
1350 divided by 945 is 1 with a remainder of 405.
The number 1 becomes the next digit in our result. 
Result so far: 54655.6571
Subtract 945 from 1350 to get 405.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4050, and continue the process.

Advancing to step 13:
If we divide 4050 by 945, we get 4 and a remainder of 270.
Use 4 as the next digit of our solution. 
Result so far: 54655.65714
If we take 3780 away from 4050, we end up with 270.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2700, and continue the process.

Let's proceed to step 14:
2700 divided by 945 is 2 with a remainder of 810.
Record the quotient 2 as the next digit in the result. 
Result so far: 54655.657142
If we subtract 1890 from 2700, we get 810.
Since there are no more digits in the dividend, we add a zero to the remainder making it 8100, and continue the process.

Moving on to step 15:
The number 945 fits into 8100 8 times, leaving a remainder of 540.
Record the quotient 8 as the next digit in the result. 
Result so far: 54655.6571428
Subtract 7560 from 8100 to get 540.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5400, and continue the process.

Step 16:
945 goes into 5400 5 times with a remainder of 675.
Record the quotient 5 as the next digit in the result. 
Result so far: 54655.65714285
Subtract 4725 from 5400 to get 675.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6750, and continue the process.

Our division results in 54655.65714285 with a remaining 6.75e-07.