We look at the division of 41446463 by 643 
The aim is to understand the frequency of 643 in 41446463.

Step 1:
When dividing 4 by 643, we get 0 with a remainder of 4.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 4 and we're left with 4.
Fetch the next digit (1) from the dividend, attach it to 4 and continue: 41 / 643

On to step 2:
The number 643 fits into 41 0 times, leaving a remainder of 41.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 41 leaves us with 41.
Take the next digit (4) from the dividend and append it to 41, then repeat: 414 / 643

Going ahead to step 3:
414 divided by 643 is 0 with a remainder of 414.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 414 and we're left with 414.
Include the next digit (4) from the dividend after 414, then repeat: 4144 / 643

Advancing to step 4:
The number 643 fits into 4144 6 times, leaving a remainder of 286.
Write down 6 as next digit of the result. 
Result so far: 6.0
The remainder is 286 after subtracting 3858 from 4144.
Fetch the next digit (6) from the dividend, attach it to 286 and continue: 2866 / 643

Moving on to step 5:
643 can be fit into 2866 4 times, resulting in a remainder of 294.
Put 4 as the next digit of the answer. 
Result so far: 64.0
The remainder is 294 after subtracting 2572 from 2866.
Grab the next digit (4) from the dividend, add it to 294, then carry on: 2944 / 643

Let's proceed to step 6:
643 goes into 2944 4 times with a remainder of 372.
The next digit of our result is 4. 
Result so far: 644.0
The remainder is 372 after subtracting 2572 from 2944.
Bring next digit (6) of the dividend behind the 372 and repeat the process: 3726 / 643

Advancing to step 7:
If we divide 3726 by 643, we get 5 and a remainder of 511.
Record the quotient 5 as the next digit in the result. 
Result so far: 6445.0
Subtract 3215 from 3726 to get 511.
Include the next digit (3) from the dividend after 511, then repeat: 5113 / 643

Going ahead to step 8:
If we divide 5113 by 643, we get 7 and a remainder of 612.
Record the quotient 7 as the next digit in the result. 
Result so far: 64457.0
Subtracting 4501 from 5113 leaves us with 612.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6120, and continue the process.

On to step 9:
The number 643 fits into 6120 9 times, leaving a remainder of 333.
The next digit of our result is 9. 
Result so far: 64457.9
Subtract 5787 from 6120 to get 333.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3330, and continue the process.

Going ahead to step 10:
643 goes into 3330 5 times with a remainder of 115.
The number 5 becomes the next digit in our result. 
Result so far: 64457.95
The remainder is 115 after subtracting 3215 from 3330.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1150, and continue the process.

Going ahead to step 11:
If we divide 1150 by 643, we get 1 and a remainder of 507.
The number 1 becomes the next digit in our result. 
Result so far: 64457.951
Deduct 643 from 1150 and we're left with 507.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5070, and continue the process.

Step 12:
When dividing 5070 by 643, we get 7 with a remainder of 569.
The next digit of our result is 7. 
Result so far: 64457.9517
Subtracting 4501 from 5070 leaves us with 569.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5690, and continue the process.

On to step 13:
When dividing 5690 by 643, we get 8 with a remainder of 546.
The next digit of our result is 8. 
Result so far: 64457.95178
Subtracting 5144 from 5690 leaves us with 546.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5460, and continue the process.

Moving on to step 14:
If we divide 5460 by 643, we get 8 and a remainder of 316.
Use 8 as the next digit of our solution. 
Result so far: 64457.951788
If we take 5144 away from 5460, we end up with 316.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3160, and continue the process.

The quotient of the division is 64457.951788, and the remainder is 3.16e-05.