Let's divide 21591682 by 545
The aim is to understand the frequency of 545 in 21591682.

Going ahead to step 1:
2 divided by 545 is 0 with a remainder of 2.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 2 and we're left with 2.
Fetch the next digit (1) from the dividend, attach it to 2 and continue: 21 / 545

Going ahead to step 2:
If we divide 21 by 545, we get 0 and a remainder of 21.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 21 leaves us with 21.
Include the next digit (5) from the dividend after 21, then repeat: 215 / 545

Step 3:
545 can be fit into 215 0 times, resulting in a remainder of 215.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 215 to get 215.
Bring next digit (9) of the dividend behind the 215 and repeat the process: 2159 / 545

Going ahead to step 4:
The number 545 fits into 2159 3 times, leaving a remainder of 524.
Use 3 as the next digit of our solution. 
Result so far: 3.0
If we take 1635 away from 2159, we end up with 524.
Bring next digit (1) of the dividend behind the 524 and repeat the process: 5241 / 545

Moving on to step 5:
545 can be fit into 5241 9 times, resulting in a remainder of 336.
Write down 9 as next digit of the result. 
Result so far: 39.0
The remainder is 336 after subtracting 4905 from 5241.
Append the next digit (6) from the dividend to 336 and continue with: 3366 / 545

Moving on to step 6:
545 can be fit into 3366 6 times, resulting in a remainder of 96.
Put 6 as the next digit of the answer. 
Result so far: 396.0
If we subtract 3270 from 3366, we get 96.
Include the next digit (8) from the dividend after 96, then repeat: 968 / 545

Going ahead to step 7:
545 can be fit into 968 1 times, resulting in a remainder of 423.
Record the quotient 1 as the next digit in the result. 
Result so far: 3961.0
If we subtract 545 from 968, we get 423.
Grab the next digit (2) from the dividend, add it to 423, then carry on: 4232 / 545

Advancing to step 8:
The number 545 fits into 4232 7 times, leaving a remainder of 417.
Write down 7 as next digit of the result. 
Result so far: 39617.0
Subtracting 3815 from 4232 leaves us with 417.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4170, and continue the process.

Going ahead to step 9:
The number 545 fits into 4170 7 times, leaving a remainder of 355.
The next digit of our result is 7. 
Result so far: 39617.7
Subtracting 3815 from 4170 leaves us with 355.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3550, and continue the process.

Step 10:
If we divide 3550 by 545, we get 6 and a remainder of 280.
The next digit of our result is 6. 
Result so far: 39617.76
The remainder is 280 after subtracting 3270 from 3550.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2800, and continue the process.

Moving on to step 11:
The number 545 fits into 2800 5 times, leaving a remainder of 75.
Write down 5 as next digit of the result. 
Result so far: 39617.765
The remainder is 75 after subtracting 2725 from 2800.
Since there are no more digits in the dividend, we add a zero to the remainder making it 750, and continue the process.

Going ahead to step 12:
The number 545 fits into 750 1 times, leaving a remainder of 205.
The number 1 becomes the next digit in our result. 
Result so far: 39617.7651
If we take 545 away from 750, we end up with 205.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2050, and continue the process.

On to step 13:
2050 divided by 545 is 3 with a remainder of 415.
Write down 3 as next digit of the result. 
Result so far: 39617.76513
Deduct 1635 from 2050 and we're left with 415.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4150, and continue the process.

Going ahead to step 14:
If we divide 4150 by 545, we get 7 and a remainder of 335.
The number 7 becomes the next digit in our result. 
Result so far: 39617.765137
Deduct 3815 from 4150 and we're left with 335.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3350, and continue the process.

Going ahead to step 15:
545 goes into 3350 6 times with a remainder of 80.
Use 6 as the next digit of our solution. 
Result so far: 39617.7651376
Deduct 3270 from 3350 and we're left with 80.
Since there are no more digits in the dividend, we add a zero to the remainder making it 800, and continue the process.

Let's proceed to step 16:
The number 545 fits into 800 1 times, leaving a remainder of 255.
Write down 1 as next digit of the result. 
Result so far: 39617.76513761
Subtracting 545 from 800 leaves us with 255.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2550, and continue the process.

The quotient of the division is 39617.76513761, and the remainder is 2.55e-07.