641578 divided by 73 
The aim is to understand the frequency of 73 in 641578.

Moving on to step 1:
73 can be fit into 6 0 times, resulting in a remainder of 6.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 6 and we're left with 6.
Include the next digit (4) from the dividend after 6, then repeat: 64 / 73

On to step 2:
64 divided by 73 is 0 with a remainder of 64.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 64, we get 64.
Grab the next digit (1) from the dividend, add it to 64, then carry on: 641 / 73

On to step 3:
The number 73 fits into 641 8 times, leaving a remainder of 57.
Use 8 as the next digit of our solution. 
Result so far: 8.0
Subtracting 584 from 641 leaves us with 57.
Include the next digit (5) from the dividend after 57, then repeat: 575 / 73

Going ahead to step 4:
73 goes into 575 7 times with a remainder of 64.
Record the quotient 7 as the next digit in the result. 
Result so far: 87.0
If we take 511 away from 575, we end up with 64.
Fetch the next digit (7) from the dividend, attach it to 64 and continue: 647 / 73

Let's proceed to step 5:
73 can be fit into 647 8 times, resulting in a remainder of 63.
The next digit of our result is 8. 
Result so far: 878.0
The remainder is 63 after subtracting 584 from 647.
Include the next digit (8) from the dividend after 63, then repeat: 638 / 73

Going ahead to step 6:
73 can be fit into 638 8 times, resulting in a remainder of 54.
The number 8 becomes the next digit in our result. 
Result so far: 8788.0
Subtracting 584 from 638 leaves us with 54.
Since there are no more digits in the dividend, we add a zero to the remainder making it 540, and continue the process.

Let's proceed to step 7:
The number 73 fits into 540 7 times, leaving a remainder of 29.
Put 7 as the next digit of the answer. 
Result so far: 8788.7
Deduct 511 from 540 and we're left with 29.
Since there are no more digits in the dividend, we add a zero to the remainder making it 290, and continue the process.

Step 8:
When dividing 290 by 73, we get 3 with a remainder of 71.
Use 3 as the next digit of our solution. 
Result so far: 8788.73
Deduct 219 from 290 and we're left with 71.
Since there are no more digits in the dividend, we add a zero to the remainder making it 710, and continue the process.

Going ahead to step 9:
The number 73 fits into 710 9 times, leaving a remainder of 53.
Record the quotient 9 as the next digit in the result. 
Result so far: 8788.739
Deduct 657 from 710 and we're left with 53.
Since there are no more digits in the dividend, we add a zero to the remainder making it 530, and continue the process.

Advancing to step 10:
73 goes into 530 7 times with a remainder of 19.
Put 7 as the next digit of the answer. 
Result so far: 8788.7397
If we subtract 511 from 530, we get 19.
Since there are no more digits in the dividend, we add a zero to the remainder making it 190, and continue the process.

Advancing to step 11:
190 divided by 73 is 2 with a remainder of 44.
Record the quotient 2 as the next digit in the result. 
Result so far: 8788.73972
If we take 146 away from 190, we end up with 44.
Since there are no more digits in the dividend, we add a zero to the remainder making it 440, and continue the process.

Let's proceed to step 12:
When dividing 440 by 73, we get 6 with a remainder of 2.
Put 6 as the next digit of the answer. 
Result so far: 8788.739726
The remainder is 2 after subtracting 438 from 440.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

On to step 13:
When dividing 20 by 73, we get 0 with a remainder of 20.
Record the quotient 0 as the next digit in the result. 
Result so far: 8788.739726
Subtracting 0 from 20 leaves us with 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Step 14:
If we divide 200 by 73, we get 2 and a remainder of 54.
The number 2 becomes the next digit in our result. 
Result so far: 8788.73972602
The remainder is 54 after subtracting 146 from 200.
Since there are no more digits in the dividend, we add a zero to the remainder making it 540, and continue the process.

After the division, we end up with 8788.73972602 and a remainder of 5.4e-08.