We're dividing 66169703 by 439 
The aim is to understand the frequency of 439 in 66169703.

Step 1:
439 goes into 6 0 times with a remainder of 6.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 6 and we're left with 6.
Bring next digit (6) of the dividend behind the 6 and repeat the process: 66 / 439

On to step 2:
The number 439 fits into 66 0 times, leaving a remainder of 66.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 66, we get 66.
Grab the next digit (1) from the dividend, add it to 66, then carry on: 661 / 439

Advancing to step 3:
The number 439 fits into 661 1 times, leaving a remainder of 222.
Put 1 as the next digit of the answer. 
Result so far: 1.0
Subtract 439 from 661 to get 222.
Bring next digit (6) of the dividend behind the 222 and repeat the process: 2226 / 439

Advancing to step 4:
If we divide 2226 by 439, we get 5 and a remainder of 31.
Use 5 as the next digit of our solution. 
Result so far: 15.0
If we take 2195 away from 2226, we end up with 31.
Append the next digit (9) from the dividend to 31 and continue with: 319 / 439

Going ahead to step 5:
When dividing 319 by 439, we get 0 with a remainder of 319.
The number 0 becomes the next digit in our result. 
Result so far: 150.0
Subtracting 0 from 319 leaves us with 319.
Grab the next digit (7) from the dividend, add it to 319, then carry on: 3197 / 439

On to step 6:
When dividing 3197 by 439, we get 7 with a remainder of 124.
Use 7 as the next digit of our solution. 
Result so far: 1507.0
If we take 3073 away from 3197, we end up with 124.
Take the next digit (0) from the dividend and append it to 124, then repeat: 1240 / 439

Advancing to step 7:
439 can be fit into 1240 2 times, resulting in a remainder of 362.
Put 2 as the next digit of the answer. 
Result so far: 15072.0
Deduct 878 from 1240 and we're left with 362.
Take the next digit (3) from the dividend and append it to 362, then repeat: 3623 / 439

Advancing to step 8:
3623 divided by 439 is 8 with a remainder of 111.
Record the quotient 8 as the next digit in the result. 
Result so far: 150728.0
Subtracting 3512 from 3623 leaves us with 111.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1110, and continue the process.

Advancing to step 9:
439 can be fit into 1110 2 times, resulting in a remainder of 232.
Write down 2 as next digit of the result. 
Result so far: 150728.2
Deduct 878 from 1110 and we're left with 232.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2320, and continue the process.

Step 10:
2320 divided by 439 is 5 with a remainder of 125.
The number 5 becomes the next digit in our result. 
Result so far: 150728.25
The remainder is 125 after subtracting 2195 from 2320.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1250, and continue the process.

On to step 11:
1250 divided by 439 is 2 with a remainder of 372.
The next digit of our result is 2. 
Result so far: 150728.252
Deduct 878 from 1250 and we're left with 372.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3720, and continue the process.

Going ahead to step 12:
The number 439 fits into 3720 8 times, leaving a remainder of 208.
Put 8 as the next digit of the answer. 
Result so far: 150728.2528
The remainder is 208 after subtracting 3512 from 3720.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2080, and continue the process.

Moving on to step 13:
If we divide 2080 by 439, we get 4 and a remainder of 324.
Write down 4 as next digit of the result. 
Result so far: 150728.25284
If we subtract 1756 from 2080, we get 324.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3240, and continue the process.

On to step 14:
If we divide 3240 by 439, we get 7 and a remainder of 167.
Put 7 as the next digit of the answer. 
Result so far: 150728.252847
The remainder is 167 after subtracting 3073 from 3240.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1670, and continue the process.

Let's proceed to step 15:
If we divide 1670 by 439, we get 3 and a remainder of 353.
Use 3 as the next digit of our solution. 
Result so far: 150728.2528473
The remainder is 353 after subtracting 1317 from 1670.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3530, and continue the process.

Let's proceed to step 16:
When dividing 3530 by 439, we get 8 with a remainder of 18.
Put 8 as the next digit of the answer. 
Result so far: 150728.25284738
Deduct 3512 from 3530 and we're left with 18.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

The quotient of the division is 150728.25284738, and the remainder is 1.8e-08.