Let's divide 81602350 by 551
The aim is to understand the frequency of 551 in 81602350.

Going ahead to step 1:
The number 551 fits into 8 0 times, leaving a remainder of 8.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 8, we get 8.
Append the next digit (1) from the dividend to 8 and continue with: 81 / 551

Moving on to step 2:
When dividing 81 by 551, we get 0 with a remainder of 81.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtracting 0 from 81 leaves us with 81.
Bring next digit (6) of the dividend behind the 81 and repeat the process: 816 / 551

Going ahead to step 3:
The number 551 fits into 816 1 times, leaving a remainder of 265.
The next digit of our result is 1. 
Result so far: 1.0
The remainder is 265 after subtracting 551 from 816.
Bring next digit (0) of the dividend behind the 265 and repeat the process: 2650 / 551

Let's proceed to step 4:
The number 551 fits into 2650 4 times, leaving a remainder of 446.
Record the quotient 4 as the next digit in the result. 
Result so far: 14.0
The remainder is 446 after subtracting 2204 from 2650.
Grab the next digit (2) from the dividend, add it to 446, then carry on: 4462 / 551

On to step 5:
If we divide 4462 by 551, we get 8 and a remainder of 54.
Put 8 as the next digit of the answer. 
Result so far: 148.0
If we take 4408 away from 4462, we end up with 54.
Grab the next digit (3) from the dividend, add it to 54, then carry on: 543 / 551

Advancing to step 6:
If we divide 543 by 551, we get 0 and a remainder of 543.
Record the quotient 0 as the next digit in the result. 
Result so far: 1480.0
Deduct 0 from 543 and we're left with 543.
Append the next digit (5) from the dividend to 543 and continue with: 5435 / 551

Advancing to step 7:
If we divide 5435 by 551, we get 9 and a remainder of 476.
Record the quotient 9 as the next digit in the result. 
Result so far: 14809.0
Subtract 4959 from 5435 to get 476.
Take the next digit (0) from the dividend and append it to 476, then repeat: 4760 / 551

Advancing to step 8:
551 can be fit into 4760 8 times, resulting in a remainder of 352.
The number 8 becomes the next digit in our result. 
Result so far: 148098.0
If we take 4408 away from 4760, we end up with 352.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3520, and continue the process.

Advancing to step 9:
If we divide 3520 by 551, we get 6 and a remainder of 214.
Use 6 as the next digit of our solution. 
Result so far: 148098.6
The remainder is 214 after subtracting 3306 from 3520.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2140, and continue the process.

Let's proceed to step 10:
551 goes into 2140 3 times with a remainder of 487.
The number 3 becomes the next digit in our result. 
Result so far: 148098.63
Subtract 1653 from 2140 to get 487.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4870, and continue the process.

Moving on to step 11:
If we divide 4870 by 551, we get 8 and a remainder of 462.
The next digit of our result is 8. 
Result so far: 148098.638
The remainder is 462 after subtracting 4408 from 4870.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4620, and continue the process.

Going ahead to step 12:
4620 divided by 551 is 8 with a remainder of 212.
Record the quotient 8 as the next digit in the result. 
Result so far: 148098.6388
If we subtract 4408 from 4620, we get 212.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2120, and continue the process.

The final outcome is 148098.6388, with a leftover of 0.00212.