We're dividing 21972607 by 587 
The aim is to understand the frequency of 587 in 21972607.

Let's proceed to step 1:
When dividing 2 by 587, we get 0 with a remainder of 2.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 2, we end up with 2.
Grab the next digit (1) from the dividend, add it to 2, then carry on: 21 / 587

Step 2:
587 can be fit into 21 0 times, resulting in a remainder of 21.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 21 and we're left with 21.
Include the next digit (9) from the dividend after 21, then repeat: 219 / 587

On to step 3:
The number 587 fits into 219 0 times, leaving a remainder of 219.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 219, we end up with 219.
Append the next digit (7) from the dividend to 219 and continue with: 2197 / 587

Step 4:
If we divide 2197 by 587, we get 3 and a remainder of 436.
The number 3 becomes the next digit in our result. 
Result so far: 3.0
If we subtract 1761 from 2197, we get 436.
Fetch the next digit (2) from the dividend, attach it to 436 and continue: 4362 / 587

Advancing to step 5:
587 goes into 4362 7 times with a remainder of 253.
The number 7 becomes the next digit in our result. 
Result so far: 37.0
The remainder is 253 after subtracting 4109 from 4362.
Append the next digit (6) from the dividend to 253 and continue with: 2536 / 587

Going ahead to step 6:
587 can be fit into 2536 4 times, resulting in a remainder of 188.
The number 4 becomes the next digit in our result. 
Result so far: 374.0
The remainder is 188 after subtracting 2348 from 2536.
Fetch the next digit (0) from the dividend, attach it to 188 and continue: 1880 / 587

Let's proceed to step 7:
When dividing 1880 by 587, we get 3 with a remainder of 119.
Put 3 as the next digit of the answer. 
Result so far: 3743.0
Subtracting 1761 from 1880 leaves us with 119.
Bring next digit (7) of the dividend behind the 119 and repeat the process: 1197 / 587

Going ahead to step 8:
The number 587 fits into 1197 2 times, leaving a remainder of 23.
Write down 2 as next digit of the result. 
Result so far: 37432.0
Subtracting 1174 from 1197 leaves us with 23.
Since there are no more digits in the dividend, we add a zero to the remainder making it 230, and continue the process.

On to step 9:
587 can be fit into 230 0 times, resulting in a remainder of 230.
Use 0 as the next digit of our solution. 
Result so far: 37432.0
The remainder is 230 after subtracting 0 from 230.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2300, and continue the process.

Advancing to step 10:
587 goes into 2300 3 times with a remainder of 539.
The next digit of our result is 3. 
Result so far: 37432.03
The remainder is 539 after subtracting 1761 from 2300.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5390, and continue the process.

Moving on to step 11:
The number 587 fits into 5390 9 times, leaving a remainder of 107.
The next digit of our result is 9. 
Result so far: 37432.039
If we take 5283 away from 5390, we end up with 107.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1070, and continue the process.

Advancing to step 12:
If we divide 1070 by 587, we get 1 and a remainder of 483.
Record the quotient 1 as the next digit in the result. 
Result so far: 37432.0391
If we take 587 away from 1070, we end up with 483.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4830, and continue the process.

Going ahead to step 13:
587 goes into 4830 8 times with a remainder of 134.
Record the quotient 8 as the next digit in the result. 
Result so far: 37432.03918
Subtract 4696 from 4830 to get 134.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1340, and continue the process.

Advancing to step 14:
1340 divided by 587 is 2 with a remainder of 166.
The next digit of our result is 2. 
Result so far: 37432.039182
Deduct 1174 from 1340 and we're left with 166.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1660, and continue the process.

Going ahead to step 15:
If we divide 1660 by 587, we get 2 and a remainder of 486.
Record the quotient 2 as the next digit in the result. 
Result so far: 37432.0391822
The remainder is 486 after subtracting 1174 from 1660.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4860, and continue the process.

The final result is 37432.0391822 with a remainder of 4.86e-06.