We're dividing 35201010 by 449 
The aim is to understand the frequency of 449 in 35201010.

Advancing to step 1:
3 divided by 449 is 0 with a remainder of 3.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 3, we end up with 3.
Append the next digit (5) from the dividend to 3 and continue with: 35 / 449

Going ahead to step 2:
If we divide 35 by 449, we get 0 and a remainder of 35.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 35 to get 35.
Append the next digit (2) from the dividend to 35 and continue with: 352 / 449

On to step 3:
The number 449 fits into 352 0 times, leaving a remainder of 352.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 352 leaves us with 352.
Include the next digit (0) from the dividend after 352, then repeat: 3520 / 449

On to step 4:
If we divide 3520 by 449, we get 7 and a remainder of 377.
Put 7 as the next digit of the answer. 
Result so far: 7.0
Subtract 3143 from 3520 to get 377.
Grab the next digit (1) from the dividend, add it to 377, then carry on: 3771 / 449

Moving on to step 5:
3771 divided by 449 is 8 with a remainder of 179.
Record the quotient 8 as the next digit in the result. 
Result so far: 78.0
If we subtract 3592 from 3771, we get 179.
Append the next digit (0) from the dividend to 179 and continue with: 1790 / 449

Let's proceed to step 6:
1790 divided by 449 is 3 with a remainder of 443.
Use 3 as the next digit of our solution. 
Result so far: 783.0
If we take 1347 away from 1790, we end up with 443.
Grab the next digit (1) from the dividend, add it to 443, then carry on: 4431 / 449

Moving on to step 7:
449 goes into 4431 9 times with a remainder of 390.
Record the quotient 9 as the next digit in the result. 
Result so far: 7839.0
Deduct 4041 from 4431 and we're left with 390.
Take the next digit (0) from the dividend and append it to 390, then repeat: 3900 / 449

Let's proceed to step 8:
When dividing 3900 by 449, we get 8 with a remainder of 308.
Use 8 as the next digit of our solution. 
Result so far: 78398.0
The remainder is 308 after subtracting 3592 from 3900.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3080, and continue the process.

Moving on to step 9:
When dividing 3080 by 449, we get 6 with a remainder of 386.
The next digit of our result is 6. 
Result so far: 78398.6
If we subtract 2694 from 3080, we get 386.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3860, and continue the process.

Let's proceed to step 10:
When dividing 3860 by 449, we get 8 with a remainder of 268.
The next digit of our result is 8. 
Result so far: 78398.68
If we subtract 3592 from 3860, we get 268.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2680, and continue the process.

Going ahead to step 11:
If we divide 2680 by 449, we get 5 and a remainder of 435.
Record the quotient 5 as the next digit in the result. 
Result so far: 78398.685
The remainder is 435 after subtracting 2245 from 2680.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4350, and continue the process.

Moving on to step 12:
If we divide 4350 by 449, we get 9 and a remainder of 309.
Write down 9 as next digit of the result. 
Result so far: 78398.6859
Subtracting 4041 from 4350 leaves us with 309.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3090, and continue the process.

Moving on to step 13:
When dividing 3090 by 449, we get 6 with a remainder of 396.
Write down 6 as next digit of the result. 
Result so far: 78398.68596
Subtract 2694 from 3090 to get 396.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3960, and continue the process.

Let's proceed to step 14:
The number 449 fits into 3960 8 times, leaving a remainder of 368.
The next digit of our result is 8. 
Result so far: 78398.685968
If we subtract 3592 from 3960, we get 368.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3680, and continue the process.

Moving on to step 15:
The number 449 fits into 3680 8 times, leaving a remainder of 88.
Use 8 as the next digit of our solution. 
Result so far: 78398.6859688
Subtract 3592 from 3680 to get 88.
Since there are no more digits in the dividend, we add a zero to the remainder making it 880, and continue the process.

The final result is 78398.6859688 with a remainder of 8.8e-07.