We're dividing 43534951 by 407 
The aim is to understand the frequency of 407 in 43534951.

On to step 1:
If we divide 4 by 407, we get 0 and a remainder of 4.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 4, we end up with 4.
Take the next digit (3) from the dividend and append it to 4, then repeat: 43 / 407

Step 2:
If we divide 43 by 407, we get 0 and a remainder of 43.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 43, we end up with 43.
Include the next digit (5) from the dividend after 43, then repeat: 435 / 407

Step 3:
407 can be fit into 435 1 times, resulting in a remainder of 28.
Use 1 as the next digit of our solution. 
Result so far: 1.0
If we subtract 407 from 435, we get 28.
Include the next digit (3) from the dividend after 28, then repeat: 283 / 407

Let's proceed to step 4:
283 divided by 407 is 0 with a remainder of 283.
The next digit of our result is 0. 
Result so far: 10.0
The remainder is 283 after subtracting 0 from 283.
Include the next digit (4) from the dividend after 283, then repeat: 2834 / 407

Let's proceed to step 5:
If we divide 2834 by 407, we get 6 and a remainder of 392.
Use 6 as the next digit of our solution. 
Result so far: 106.0
Subtract 2442 from 2834 to get 392.
Fetch the next digit (9) from the dividend, attach it to 392 and continue: 3929 / 407

Let's proceed to step 6:
407 goes into 3929 9 times with a remainder of 266.
The number 9 becomes the next digit in our result. 
Result so far: 1069.0
Subtracting 3663 from 3929 leaves us with 266.
Take the next digit (5) from the dividend and append it to 266, then repeat: 2665 / 407

Moving on to step 7:
2665 divided by 407 is 6 with a remainder of 223.
The number 6 becomes the next digit in our result. 
Result so far: 10696.0
The remainder is 223 after subtracting 2442 from 2665.
Take the next digit (1) from the dividend and append it to 223, then repeat: 2231 / 407

Step 8:
407 can be fit into 2231 5 times, resulting in a remainder of 196.
Use 5 as the next digit of our solution. 
Result so far: 106965.0
If we take 2035 away from 2231, we end up with 196.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1960, and continue the process.

On to step 9:
The number 407 fits into 1960 4 times, leaving a remainder of 332.
Write down 4 as next digit of the result. 
Result so far: 106965.4
Subtract 1628 from 1960 to get 332.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3320, and continue the process.

Step 10:
The number 407 fits into 3320 8 times, leaving a remainder of 64.
Use 8 as the next digit of our solution. 
Result so far: 106965.48
Subtracting 3256 from 3320 leaves us with 64.
Since there are no more digits in the dividend, we add a zero to the remainder making it 640, and continue the process.

On to step 11:
407 goes into 640 1 times with a remainder of 233.
Write down 1 as next digit of the result. 
Result so far: 106965.481
Deduct 407 from 640 and we're left with 233.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2330, and continue the process.

Let's proceed to step 12:
The number 407 fits into 2330 5 times, leaving a remainder of 295.
Record the quotient 5 as the next digit in the result. 
Result so far: 106965.4815
Subtract 2035 from 2330 to get 295.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2950, and continue the process.

Going ahead to step 13:
2950 divided by 407 is 7 with a remainder of 101.
Put 7 as the next digit of the answer. 
Result so far: 106965.48157
If we subtract 2849 from 2950, we get 101.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1010, and continue the process.

Advancing to step 14:
The number 407 fits into 1010 2 times, leaving a remainder of 196.
The number 2 becomes the next digit in our result. 
Result so far: 106965.481572
Deduct 814 from 1010 and we're left with 196.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1960, and continue the process.

Going ahead to step 15:
407 can be fit into 1960 4 times, resulting in a remainder of 332.
Write down 4 as next digit of the result. 
Result so far: 106965.4815724
Deduct 1628 from 1960 and we're left with 332.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3320, and continue the process.

On to step 16:
The number 407 fits into 3320 8 times, leaving a remainder of 64.
The next digit of our result is 8. 
Result so far: 106965.48157248
Subtract 3256 from 3320 to get 64.
Since there are no more digits in the dividend, we add a zero to the remainder making it 640, and continue the process.

In conclusion, the division gives 106965.48157248 with a balance of 6.4e-08.