Let's divide 86741661 by 554
The aim is to understand the frequency of 554 in 86741661.

Step 1:
When dividing 8 by 554, we get 0 with a remainder of 8.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtracting 0 from 8 leaves us with 8.
Take the next digit (6) from the dividend and append it to 8, then repeat: 86 / 554

Moving on to step 2:
The number 554 fits into 86 0 times, leaving a remainder of 86.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we subtract 0 from 86, we get 86.
Append the next digit (7) from the dividend to 86 and continue with: 867 / 554

Going ahead to step 3:
554 can be fit into 867 1 times, resulting in a remainder of 313.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
If we subtract 554 from 867, we get 313.
Append the next digit (4) from the dividend to 313 and continue with: 3134 / 554

Advancing to step 4:
When dividing 3134 by 554, we get 5 with a remainder of 364.
Use 5 as the next digit of our solution. 
Result so far: 15.0
If we subtract 2770 from 3134, we get 364.
Append the next digit (1) from the dividend to 364 and continue with: 3641 / 554

Moving on to step 5:
554 can be fit into 3641 6 times, resulting in a remainder of 317.
The number 6 becomes the next digit in our result. 
Result so far: 156.0
If we take 3324 away from 3641, we end up with 317.
Append the next digit (6) from the dividend to 317 and continue with: 3176 / 554

Step 6:
The number 554 fits into 3176 5 times, leaving a remainder of 406.
Use 5 as the next digit of our solution. 
Result so far: 1565.0
Subtracting 2770 from 3176 leaves us with 406.
Append the next digit (6) from the dividend to 406 and continue with: 4066 / 554

Let's proceed to step 7:
If we divide 4066 by 554, we get 7 and a remainder of 188.
The next digit of our result is 7. 
Result so far: 15657.0
Deduct 3878 from 4066 and we're left with 188.
Grab the next digit (1) from the dividend, add it to 188, then carry on: 1881 / 554

Step 8:
1881 divided by 554 is 3 with a remainder of 219.
Put 3 as the next digit of the answer. 
Result so far: 156573.0
If we take 1662 away from 1881, we end up with 219.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2190, and continue the process.

Step 9:
If we divide 2190 by 554, we get 3 and a remainder of 528.
Use 3 as the next digit of our solution. 
Result so far: 156573.3
Subtract 1662 from 2190 to get 528.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5280, and continue the process.

Let's proceed to step 10:
The number 554 fits into 5280 9 times, leaving a remainder of 294.
Use 9 as the next digit of our solution. 
Result so far: 156573.39
The remainder is 294 after subtracting 4986 from 5280.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2940, and continue the process.

Step 11:
554 can be fit into 2940 5 times, resulting in a remainder of 170.
The next digit of our result is 5. 
Result so far: 156573.395
If we take 2770 away from 2940, we end up with 170.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1700, and continue the process.

Step 12:
554 goes into 1700 3 times with a remainder of 38.
Use 3 as the next digit of our solution. 
Result so far: 156573.3953
Deduct 1662 from 1700 and we're left with 38.
Since there are no more digits in the dividend, we add a zero to the remainder making it 380, and continue the process.

On to step 13:
If we divide 380 by 554, we get 0 and a remainder of 380.
Write down 0 as next digit of the result. 
Result so far: 156573.3953
Subtracting 0 from 380 leaves us with 380.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3800, and continue the process.

Going ahead to step 14:
3800 divided by 554 is 6 with a remainder of 476.
Put 6 as the next digit of the answer. 
Result so far: 156573.395306
Deduct 3324 from 3800 and we're left with 476.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4760, and continue the process.

Moving on to step 15:
When dividing 4760 by 554, we get 8 with a remainder of 328.
Put 8 as the next digit of the answer. 
Result so far: 156573.3953068
The remainder is 328 after subtracting 4432 from 4760.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3280, and continue the process.

Moving on to step 16:
The number 554 fits into 3280 5 times, leaving a remainder of 510.
The number 5 becomes the next digit in our result. 
Result so far: 156573.39530685
If we take 2770 away from 3280, we end up with 510.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5100, and continue the process.

The final outcome is 156573.39530685, with a leftover of 5.1e-07.