We're dividing 80486091 by 357 
The aim is to understand the frequency of 357 in 80486091.

Advancing to step 1:
If we divide 8 by 357, we get 0 and a remainder of 8.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 8, we end up with 8.
Grab the next digit (0) from the dividend, add it to 8, then carry on: 80 / 357

Going ahead to step 2:
80 divided by 357 is 0 with a remainder of 80.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 80 leaves us with 80.
Grab the next digit (4) from the dividend, add it to 80, then carry on: 804 / 357

Moving on to step 3:
804 divided by 357 is 2 with a remainder of 90.
Write down 2 as next digit of the result. 
Result so far: 2.0
Subtract 714 from 804 to get 90.
Fetch the next digit (8) from the dividend, attach it to 90 and continue: 908 / 357

Advancing to step 4:
When dividing 908 by 357, we get 2 with a remainder of 194.
The next digit of our result is 2. 
Result so far: 22.0
The remainder is 194 after subtracting 714 from 908.
Fetch the next digit (6) from the dividend, attach it to 194 and continue: 1946 / 357

On to step 5:
1946 divided by 357 is 5 with a remainder of 161.
Write down 5 as next digit of the result. 
Result so far: 225.0
Deduct 1785 from 1946 and we're left with 161.
Include the next digit (0) from the dividend after 161, then repeat: 1610 / 357

Going ahead to step 6:
357 can be fit into 1610 4 times, resulting in a remainder of 182.
Record the quotient 4 as the next digit in the result. 
Result so far: 2254.0
Deduct 1428 from 1610 and we're left with 182.
Fetch the next digit (9) from the dividend, attach it to 182 and continue: 1829 / 357

Let's proceed to step 7:
The number 357 fits into 1829 5 times, leaving a remainder of 44.
Use 5 as the next digit of our solution. 
Result so far: 22545.0
If we subtract 1785 from 1829, we get 44.
Fetch the next digit (1) from the dividend, attach it to 44 and continue: 441 / 357

Step 8:
357 goes into 441 1 times with a remainder of 84.
The number 1 becomes the next digit in our result. 
Result so far: 225451.0
Deduct 357 from 441 and we're left with 84.
Since there are no more digits in the dividend, we add a zero to the remainder making it 840, and continue the process.

Moving on to step 9:
When dividing 840 by 357, we get 2 with a remainder of 126.
Write down 2 as next digit of the result. 
Result so far: 225451.2
If we subtract 714 from 840, we get 126.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1260, and continue the process.

Let's proceed to step 10:
357 can be fit into 1260 3 times, resulting in a remainder of 189.
Record the quotient 3 as the next digit in the result. 
Result so far: 225451.23
The remainder is 189 after subtracting 1071 from 1260.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1890, and continue the process.

Going ahead to step 11:
1890 divided by 357 is 5 with a remainder of 105.
The next digit of our result is 5. 
Result so far: 225451.235
If we subtract 1785 from 1890, we get 105.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1050, and continue the process.

Let's proceed to step 12:
If we divide 1050 by 357, we get 2 and a remainder of 336.
Use 2 as the next digit of our solution. 
Result so far: 225451.2352
Subtracting 714 from 1050 leaves us with 336.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3360, and continue the process.

Let's proceed to step 13:
If we divide 3360 by 357, we get 9 and a remainder of 147.
Record the quotient 9 as the next digit in the result. 
Result so far: 225451.23529
If we take 3213 away from 3360, we end up with 147.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1470, and continue the process.

Moving on to step 14:
If we divide 1470 by 357, we get 4 and a remainder of 42.
Put 4 as the next digit of the answer. 
Result so far: 225451.235294
If we take 1428 away from 1470, we end up with 42.
Since there are no more digits in the dividend, we add a zero to the remainder making it 420, and continue the process.

Moving on to step 15:
If we divide 420 by 357, we get 1 and a remainder of 63.
Use 1 as the next digit of our solution. 
Result so far: 225451.2352941
Subtract 357 from 420 to get 63.
Since there are no more digits in the dividend, we add a zero to the remainder making it 630, and continue the process.

Moving on to step 16:
357 goes into 630 1 times with a remainder of 273.
The next digit of our result is 1. 
Result so far: 225451.23529411
Subtract 357 from 630 to get 273.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2730, and continue the process.

After the division, we end up with 225451.23529411 and a remainder of 2.73e-07.