43964857 ÷ 749 
The aim is to understand the frequency of 749 in 43964857.

Advancing to step 1:
If we divide 4 by 749, we get 0 and a remainder of 4.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 4 leaves us with 4.
Include the next digit (3) from the dividend after 4, then repeat: 43 / 749

Step 2:
43 divided by 749 is 0 with a remainder of 43.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 43 leaves us with 43.
Bring next digit (9) of the dividend behind the 43 and repeat the process: 439 / 749

Let's proceed to step 3:
The number 749 fits into 439 0 times, leaving a remainder of 439.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 439, we end up with 439.
Fetch the next digit (6) from the dividend, attach it to 439 and continue: 4396 / 749

Step 4:
The number 749 fits into 4396 5 times, leaving a remainder of 651.
Record the quotient 5 as the next digit in the result. 
Result so far: 5.0
If we subtract 3745 from 4396, we get 651.
Bring next digit (4) of the dividend behind the 651 and repeat the process: 6514 / 749

Moving on to step 5:
If we divide 6514 by 749, we get 8 and a remainder of 522.
Put 8 as the next digit of the answer. 
Result so far: 58.0
Subtract 5992 from 6514 to get 522.
Grab the next digit (8) from the dividend, add it to 522, then carry on: 5228 / 749

Step 6:
749 goes into 5228 6 times with a remainder of 734.
Use 6 as the next digit of our solution. 
Result so far: 586.0
If we take 4494 away from 5228, we end up with 734.
Grab the next digit (5) from the dividend, add it to 734, then carry on: 7345 / 749

Going ahead to step 7:
If we divide 7345 by 749, we get 9 and a remainder of 604.
Write down 9 as next digit of the result. 
Result so far: 5869.0
Deduct 6741 from 7345 and we're left with 604.
Bring next digit (7) of the dividend behind the 604 and repeat the process: 6047 / 749

Going ahead to step 8:
If we divide 6047 by 749, we get 8 and a remainder of 55.
Record the quotient 8 as the next digit in the result. 
Result so far: 58698.0
If we subtract 5992 from 6047, we get 55.
Since there are no more digits in the dividend, we add a zero to the remainder making it 550, and continue the process.

Going ahead to step 9:
550 divided by 749 is 0 with a remainder of 550.
Use 0 as the next digit of our solution. 
Result so far: 58698.0
Deduct 0 from 550 and we're left with 550.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5500, and continue the process.

Step 10:
749 can be fit into 5500 7 times, resulting in a remainder of 257.
Put 7 as the next digit of the answer. 
Result so far: 58698.07
Deduct 5243 from 5500 and we're left with 257.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2570, and continue the process.

Advancing to step 11:
If we divide 2570 by 749, we get 3 and a remainder of 323.
Use 3 as the next digit of our solution. 
Result so far: 58698.073
If we take 2247 away from 2570, we end up with 323.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3230, and continue the process.

Let's proceed to step 12:
749 can be fit into 3230 4 times, resulting in a remainder of 234.
Write down 4 as next digit of the result. 
Result so far: 58698.0734
Subtracting 2996 from 3230 leaves us with 234.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2340, and continue the process.

Going ahead to step 13:
749 goes into 2340 3 times with a remainder of 93.
Put 3 as the next digit of the answer. 
Result so far: 58698.07343
The remainder is 93 after subtracting 2247 from 2340.
Since there are no more digits in the dividend, we add a zero to the remainder making it 930, and continue the process.

Going ahead to step 14:
If we divide 930 by 749, we get 1 and a remainder of 181.
Use 1 as the next digit of our solution. 
Result so far: 58698.073431
Deduct 749 from 930 and we're left with 181.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1810, and continue the process.

Going ahead to step 15:
If we divide 1810 by 749, we get 2 and a remainder of 312.
Use 2 as the next digit of our solution. 
Result so far: 58698.0734312
The remainder is 312 after subtracting 1498 from 1810.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3120, and continue the process.

Going ahead to step 16:
When dividing 3120 by 749, we get 4 with a remainder of 124.
Put 4 as the next digit of the answer. 
Result so far: 58698.07343124
Subtracting 2996 from 3120 leaves us with 124.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1240, and continue the process.

The final result is 58698.07343124 with a remainder of 1.24e-07.