86037601 divided by 354 
The aim is to understand the frequency of 354 in 86037601.

Moving on to step 1:
354 goes into 8 0 times with a remainder of 8.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 8 and we're left with 8.
Take the next digit (6) from the dividend and append it to 8, then repeat: 86 / 354

Let's proceed to step 2:
86 divided by 354 is 0 with a remainder of 86.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 86, we end up with 86.
Bring next digit (0) of the dividend behind the 86 and repeat the process: 860 / 354

Advancing to step 3:
If we divide 860 by 354, we get 2 and a remainder of 152.
Put 2 as the next digit of the answer. 
Result so far: 2.0
Subtracting 708 from 860 leaves us with 152.
Grab the next digit (3) from the dividend, add it to 152, then carry on: 1523 / 354

Advancing to step 4:
When dividing 1523 by 354, we get 4 with a remainder of 107.
Record the quotient 4 as the next digit in the result. 
Result so far: 24.0
Subtract 1416 from 1523 to get 107.
Fetch the next digit (7) from the dividend, attach it to 107 and continue: 1077 / 354

Advancing to step 5:
The number 354 fits into 1077 3 times, leaving a remainder of 15.
The next digit of our result is 3. 
Result so far: 243.0
The remainder is 15 after subtracting 1062 from 1077.
Append the next digit (6) from the dividend to 15 and continue with: 156 / 354

On to step 6:
354 goes into 156 0 times with a remainder of 156.
Record the quotient 0 as the next digit in the result. 
Result so far: 2430.0
Deduct 0 from 156 and we're left with 156.
Fetch the next digit (0) from the dividend, attach it to 156 and continue: 1560 / 354

Advancing to step 7:
1560 divided by 354 is 4 with a remainder of 144.
The number 4 becomes the next digit in our result. 
Result so far: 24304.0
The remainder is 144 after subtracting 1416 from 1560.
Bring next digit (1) of the dividend behind the 144 and repeat the process: 1441 / 354

Let's proceed to step 8:
354 goes into 1441 4 times with a remainder of 25.
Use 4 as the next digit of our solution. 
Result so far: 243044.0
The remainder is 25 after subtracting 1416 from 1441.
Since there are no more digits in the dividend, we add a zero to the remainder making it 250, and continue the process.

Let's proceed to step 9:
354 goes into 250 0 times with a remainder of 250.
Use 0 as the next digit of our solution. 
Result so far: 243044.0
If we take 0 away from 250, we end up with 250.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2500, and continue the process.

On to step 10:
2500 divided by 354 is 7 with a remainder of 22.
Write down 7 as next digit of the result. 
Result so far: 243044.07
If we subtract 2478 from 2500, we get 22.
Since there are no more digits in the dividend, we add a zero to the remainder making it 220, and continue the process.

Step 11:
220 divided by 354 is 0 with a remainder of 220.
Write down 0 as next digit of the result. 
Result so far: 243044.07
If we take 0 away from 220, we end up with 220.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2200, and continue the process.

Moving on to step 12:
354 can be fit into 2200 6 times, resulting in a remainder of 76.
Use 6 as the next digit of our solution. 
Result so far: 243044.0706
Subtract 2124 from 2200 to get 76.
Since there are no more digits in the dividend, we add a zero to the remainder making it 760, and continue the process.

On to step 13:
When dividing 760 by 354, we get 2 with a remainder of 52.
The number 2 becomes the next digit in our result. 
Result so far: 243044.07062
If we subtract 708 from 760, we get 52.
Since there are no more digits in the dividend, we add a zero to the remainder making it 520, and continue the process.

On to step 14:
354 can be fit into 520 1 times, resulting in a remainder of 166.
The number 1 becomes the next digit in our result. 
Result so far: 243044.070621
If we take 354 away from 520, we end up with 166.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1660, and continue the process.

Moving on to step 15:
The number 354 fits into 1660 4 times, leaving a remainder of 244.
The number 4 becomes the next digit in our result. 
Result so far: 243044.0706214
Deduct 1416 from 1660 and we're left with 244.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2440, and continue the process.

Advancing to step 16:
If we divide 2440 by 354, we get 6 and a remainder of 316.
Put 6 as the next digit of the answer. 
Result so far: 243044.07062146
If we subtract 2124 from 2440, we get 316.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3160, and continue the process.

The final outcome is 243044.07062146, with a leftover of 3.16e-07.