87044609 ÷ 643 
The aim is to understand the frequency of 643 in 87044609.

Let's proceed to step 1:
643 goes into 8 0 times with a remainder of 8.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 8, we end up with 8.
Fetch the next digit (7) from the dividend, attach it to 8 and continue: 87 / 643

Let's proceed to step 2:
643 can be fit into 87 0 times, resulting in a remainder of 87.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 87, we end up with 87.
Grab the next digit (0) from the dividend, add it to 87, then carry on: 870 / 643

Going ahead to step 3:
When dividing 870 by 643, we get 1 with a remainder of 227.
The next digit of our result is 1. 
Result so far: 1.0
Subtracting 643 from 870 leaves us with 227.
Bring next digit (4) of the dividend behind the 227 and repeat the process: 2274 / 643

Advancing to step 4:
The number 643 fits into 2274 3 times, leaving a remainder of 345.
The number 3 becomes the next digit in our result. 
Result so far: 13.0
Deduct 1929 from 2274 and we're left with 345.
Fetch the next digit (4) from the dividend, attach it to 345 and continue: 3454 / 643

Step 5:
3454 divided by 643 is 5 with a remainder of 239.
Use 5 as the next digit of our solution. 
Result so far: 135.0
Subtract 3215 from 3454 to get 239.
Bring next digit (6) of the dividend behind the 239 and repeat the process: 2396 / 643

Let's proceed to step 6:
2396 divided by 643 is 3 with a remainder of 467.
Use 3 as the next digit of our solution. 
Result so far: 1353.0
The remainder is 467 after subtracting 1929 from 2396.
Bring next digit (0) of the dividend behind the 467 and repeat the process: 4670 / 643

Moving on to step 7:
When dividing 4670 by 643, we get 7 with a remainder of 169.
Record the quotient 7 as the next digit in the result. 
Result so far: 13537.0
Subtract 4501 from 4670 to get 169.
Grab the next digit (9) from the dividend, add it to 169, then carry on: 1699 / 643

Let's proceed to step 8:
643 goes into 1699 2 times with a remainder of 413.
Write down 2 as next digit of the result. 
Result so far: 135372.0
The remainder is 413 after subtracting 1286 from 1699.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4130, and continue the process.

On to step 9:
When dividing 4130 by 643, we get 6 with a remainder of 272.
Put 6 as the next digit of the answer. 
Result so far: 135372.6
If we subtract 3858 from 4130, we get 272.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2720, and continue the process.

Let's proceed to step 10:
2720 divided by 643 is 4 with a remainder of 148.
Write down 4 as next digit of the result. 
Result so far: 135372.64
The remainder is 148 after subtracting 2572 from 2720.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1480, and continue the process.

Going ahead to step 11:
When dividing 1480 by 643, we get 2 with a remainder of 194.
Use 2 as the next digit of our solution. 
Result so far: 135372.642
Subtracting 1286 from 1480 leaves us with 194.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1940, and continue the process.

Let's proceed to step 12:
643 goes into 1940 3 times with a remainder of 11.
Record the quotient 3 as the next digit in the result. 
Result so far: 135372.6423
Subtract 1929 from 1940 to get 11.
Since there are no more digits in the dividend, we add a zero to the remainder making it 110, and continue the process.

Advancing to step 13:
643 goes into 110 0 times with a remainder of 110.
The number 0 becomes the next digit in our result. 
Result so far: 135372.6423
Subtracting 0 from 110 leaves us with 110.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1100, and continue the process.

Going ahead to step 14:
1100 divided by 643 is 1 with a remainder of 457.
Put 1 as the next digit of the answer. 
Result so far: 135372.642301
The remainder is 457 after subtracting 643 from 1100.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4570, and continue the process.

Step 15:
The number 643 fits into 4570 7 times, leaving a remainder of 69.
Write down 7 as next digit of the result. 
Result so far: 135372.6423017
If we subtract 4501 from 4570, we get 69.
Since there are no more digits in the dividend, we add a zero to the remainder making it 690, and continue the process.

Going ahead to step 16:
643 can be fit into 690 1 times, resulting in a remainder of 47.
The next digit of our result is 1. 
Result so far: 135372.64230171
If we take 643 away from 690, we end up with 47.
Since there are no more digits in the dividend, we add a zero to the remainder making it 470, and continue the process.

The final outcome is 135372.64230171, with a leftover of 4.7e-08.