75315931 divided by 545 
The aim is to understand the frequency of 545 in 75315931.

Going ahead to step 1:
When dividing 7 by 545, we get 0 with a remainder of 7.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 7 and we're left with 7.
Include the next digit (5) from the dividend after 7, then repeat: 75 / 545

Advancing to step 2:
The number 545 fits into 75 0 times, leaving a remainder of 75.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtract 0 from 75 to get 75.
Append the next digit (3) from the dividend to 75 and continue with: 753 / 545

Moving on to step 3:
545 goes into 753 1 times with a remainder of 208.
The next digit of our result is 1. 
Result so far: 1.0
Deduct 545 from 753 and we're left with 208.
Grab the next digit (1) from the dividend, add it to 208, then carry on: 2081 / 545

Let's proceed to step 4:
If we divide 2081 by 545, we get 3 and a remainder of 446.
Write down 3 as next digit of the result. 
Result so far: 13.0
The remainder is 446 after subtracting 1635 from 2081.
Append the next digit (5) from the dividend to 446 and continue with: 4465 / 545

Going ahead to step 5:
545 goes into 4465 8 times with a remainder of 105.
Record the quotient 8 as the next digit in the result. 
Result so far: 138.0
The remainder is 105 after subtracting 4360 from 4465.
Bring next digit (9) of the dividend behind the 105 and repeat the process: 1059 / 545

Moving on to step 6:
When dividing 1059 by 545, we get 1 with a remainder of 514.
Put 1 as the next digit of the answer. 
Result so far: 1381.0
The remainder is 514 after subtracting 545 from 1059.
Take the next digit (3) from the dividend and append it to 514, then repeat: 5143 / 545

On to step 7:
545 goes into 5143 9 times with a remainder of 238.
Record the quotient 9 as the next digit in the result. 
Result so far: 13819.0
Deduct 4905 from 5143 and we're left with 238.
Bring next digit (1) of the dividend behind the 238 and repeat the process: 2381 / 545

Moving on to step 8:
If we divide 2381 by 545, we get 4 and a remainder of 201.
Write down 4 as next digit of the result. 
Result so far: 138194.0
Subtract 2180 from 2381 to get 201.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2010, and continue the process.

Going ahead to step 9:
2010 divided by 545 is 3 with a remainder of 375.
The next digit of our result is 3. 
Result so far: 138194.3
Deduct 1635 from 2010 and we're left with 375.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3750, and continue the process.

On to step 10:
3750 divided by 545 is 6 with a remainder of 480.
The number 6 becomes the next digit in our result. 
Result so far: 138194.36
Subtracting 3270 from 3750 leaves us with 480.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4800, and continue the process.

On to step 11:
If we divide 4800 by 545, we get 8 and a remainder of 440.
Put 8 as the next digit of the answer. 
Result so far: 138194.368
If we take 4360 away from 4800, we end up with 440.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4400, and continue the process.

Let's proceed to step 12:
The number 545 fits into 4400 8 times, leaving a remainder of 40.
Use 8 as the next digit of our solution. 
Result so far: 138194.3688
Subtracting 4360 from 4400 leaves us with 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

The quotient of the division is 138194.3688, and the remainder is 0.0004.