We look at the division of 71144196 by 643 
The aim is to understand the frequency of 643 in 71144196.

Let's proceed to step 1:
If we divide 7 by 643, we get 0 and a remainder of 7.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 7 and we're left with 7.
Fetch the next digit (1) from the dividend, attach it to 7 and continue: 71 / 643

Advancing to step 2:
The number 643 fits into 71 0 times, leaving a remainder of 71.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 71, we get 71.
Fetch the next digit (1) from the dividend, attach it to 71 and continue: 711 / 643

Advancing to step 3:
643 can be fit into 711 1 times, resulting in a remainder of 68.
Put 1 as the next digit of the answer. 
Result so far: 1.0
The remainder is 68 after subtracting 643 from 711.
Include the next digit (4) from the dividend after 68, then repeat: 684 / 643

Advancing to step 4:
684 divided by 643 is 1 with a remainder of 41.
Use 1 as the next digit of our solution. 
Result so far: 11.0
Deduct 643 from 684 and we're left with 41.
Append the next digit (4) from the dividend to 41 and continue with: 414 / 643

Step 5:
643 can be fit into 414 0 times, resulting in a remainder of 414.
Use 0 as the next digit of our solution. 
Result so far: 110.0
Subtract 0 from 414 to get 414.
Fetch the next digit (1) from the dividend, attach it to 414 and continue: 4141 / 643

Advancing to step 6:
643 goes into 4141 6 times with a remainder of 283.
Write down 6 as next digit of the result. 
Result so far: 1106.0
The remainder is 283 after subtracting 3858 from 4141.
Take the next digit (9) from the dividend and append it to 283, then repeat: 2839 / 643

Let's proceed to step 7:
When dividing 2839 by 643, we get 4 with a remainder of 267.
Use 4 as the next digit of our solution. 
Result so far: 11064.0
Deduct 2572 from 2839 and we're left with 267.
Include the next digit (6) from the dividend after 267, then repeat: 2676 / 643

Moving on to step 8:
2676 divided by 643 is 4 with a remainder of 104.
Use 4 as the next digit of our solution. 
Result so far: 110644.0
Deduct 2572 from 2676 and we're left with 104.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1040, and continue the process.

Moving on to step 9:
When dividing 1040 by 643, we get 1 with a remainder of 397.
Use 1 as the next digit of our solution. 
Result so far: 110644.1
If we subtract 643 from 1040, we get 397.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3970, and continue the process.

Advancing to step 10:
The number 643 fits into 3970 6 times, leaving a remainder of 112.
Record the quotient 6 as the next digit in the result. 
Result so far: 110644.16
Deduct 3858 from 3970 and we're left with 112.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1120, and continue the process.

Going ahead to step 11:
1120 divided by 643 is 1 with a remainder of 477.
The number 1 becomes the next digit in our result. 
Result so far: 110644.161
The remainder is 477 after subtracting 643 from 1120.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4770, and continue the process.

Going ahead to step 12:
4770 divided by 643 is 7 with a remainder of 269.
Put 7 as the next digit of the answer. 
Result so far: 110644.1617
Deduct 4501 from 4770 and we're left with 269.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2690, and continue the process.

Advancing to step 13:
When dividing 2690 by 643, we get 4 with a remainder of 118.
The number 4 becomes the next digit in our result. 
Result so far: 110644.16174
Deduct 2572 from 2690 and we're left with 118.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1180, and continue the process.

Moving on to step 14:
The number 643 fits into 1180 1 times, leaving a remainder of 537.
The next digit of our result is 1. 
Result so far: 110644.161741
Deduct 643 from 1180 and we're left with 537.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5370, and continue the process.

Let's proceed to step 15:
If we divide 5370 by 643, we get 8 and a remainder of 226.
Write down 8 as next digit of the result. 
Result so far: 110644.1617418
If we take 5144 away from 5370, we end up with 226.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2260, and continue the process.

Step 16:
643 can be fit into 2260 3 times, resulting in a remainder of 331.
Put 3 as the next digit of the answer. 
Result so far: 110644.16174183
If we take 1929 away from 2260, we end up with 331.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3310, and continue the process.

After the division, we end up with 110644.16174183 and a remainder of 3.31e-07.