We divide 88609009 by 661
The aim is to understand the frequency of 661 in 88609009.

On to step 1:
661 can be fit into 8 0 times, resulting in a remainder of 8.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 8 leaves us with 8.
Fetch the next digit (8) from the dividend, attach it to 8 and continue: 88 / 661

Let's proceed to step 2:
If we divide 88 by 661, we get 0 and a remainder of 88.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we subtract 0 from 88, we get 88.
Fetch the next digit (6) from the dividend, attach it to 88 and continue: 886 / 661

Moving on to step 3:
886 divided by 661 is 1 with a remainder of 225.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
The remainder is 225 after subtracting 661 from 886.
Bring next digit (0) of the dividend behind the 225 and repeat the process: 2250 / 661

Going ahead to step 4:
The number 661 fits into 2250 3 times, leaving a remainder of 267.
Record the quotient 3 as the next digit in the result. 
Result so far: 13.0
If we take 1983 away from 2250, we end up with 267.
Fetch the next digit (9) from the dividend, attach it to 267 and continue: 2679 / 661

Moving on to step 5:
The number 661 fits into 2679 4 times, leaving a remainder of 35.
The next digit of our result is 4. 
Result so far: 134.0
Subtracting 2644 from 2679 leaves us with 35.
Append the next digit (0) from the dividend to 35 and continue with: 350 / 661

Advancing to step 6:
350 divided by 661 is 0 with a remainder of 350.
Record the quotient 0 as the next digit in the result. 
Result so far: 1340.0
If we take 0 away from 350, we end up with 350.
Grab the next digit (0) from the dividend, add it to 350, then carry on: 3500 / 661

Advancing to step 7:
The number 661 fits into 3500 5 times, leaving a remainder of 195.
Record the quotient 5 as the next digit in the result. 
Result so far: 13405.0
If we take 3305 away from 3500, we end up with 195.
Take the next digit (9) from the dividend and append it to 195, then repeat: 1959 / 661

Step 8:
1959 divided by 661 is 2 with a remainder of 637.
Record the quotient 2 as the next digit in the result. 
Result so far: 134052.0
The remainder is 637 after subtracting 1322 from 1959.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6370, and continue the process.

Step 9:
6370 divided by 661 is 9 with a remainder of 421.
Put 9 as the next digit of the answer. 
Result so far: 134052.9
The remainder is 421 after subtracting 5949 from 6370.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4210, and continue the process.

Let's proceed to step 10:
661 can be fit into 4210 6 times, resulting in a remainder of 244.
Write down 6 as next digit of the result. 
Result so far: 134052.96
Subtract 3966 from 4210 to get 244.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2440, and continue the process.

Let's proceed to step 11:
When dividing 2440 by 661, we get 3 with a remainder of 457.
The next digit of our result is 3. 
Result so far: 134052.963
Subtracting 1983 from 2440 leaves us with 457.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4570, and continue the process.

Going ahead to step 12:
When dividing 4570 by 661, we get 6 with a remainder of 604.
Write down 6 as next digit of the result. 
Result so far: 134052.9636
The remainder is 604 after subtracting 3966 from 4570.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6040, and continue the process.

Step 13:
6040 divided by 661 is 9 with a remainder of 91.
Put 9 as the next digit of the answer. 
Result so far: 134052.96369
The remainder is 91 after subtracting 5949 from 6040.
Since there are no more digits in the dividend, we add a zero to the remainder making it 910, and continue the process.

Moving on to step 14:
The number 661 fits into 910 1 times, leaving a remainder of 249.
Put 1 as the next digit of the answer. 
Result so far: 134052.963691
If we take 661 away from 910, we end up with 249.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2490, and continue the process.

Let's proceed to step 15:
The number 661 fits into 2490 3 times, leaving a remainder of 507.
Write down 3 as next digit of the result. 
Result so far: 134052.9636913
Subtracting 1983 from 2490 leaves us with 507.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5070, and continue the process.

Let's proceed to step 16:
661 can be fit into 5070 7 times, resulting in a remainder of 443.
Write down 7 as next digit of the result. 
Result so far: 134052.96369137
Deduct 4627 from 5070 and we're left with 443.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4430, and continue the process.

The final outcome is 134052.96369137, with a leftover of 4.43e-07.