99483210 ÷ 261 
The aim is to understand the frequency of 261 in 99483210.

Going ahead to step 1:
When dividing 9 by 261, we get 0 with a remainder of 9.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 9 to get 9.
Bring next digit (9) of the dividend behind the 9 and repeat the process: 99 / 261

On to step 2:
99 divided by 261 is 0 with a remainder of 99.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 99 and we're left with 99.
Take the next digit (4) from the dividend and append it to 99, then repeat: 994 / 261

Going ahead to step 3:
994 divided by 261 is 3 with a remainder of 211.
Write down 3 as next digit of the result. 
Result so far: 3.0
Subtract 783 from 994 to get 211.
Bring next digit (8) of the dividend behind the 211 and repeat the process: 2118 / 261

Going ahead to step 4:
261 goes into 2118 8 times with a remainder of 30.
Put 8 as the next digit of the answer. 
Result so far: 38.0
Subtract 2088 from 2118 to get 30.
Grab the next digit (3) from the dividend, add it to 30, then carry on: 303 / 261

Going ahead to step 5:
261 can be fit into 303 1 times, resulting in a remainder of 42.
The number 1 becomes the next digit in our result. 
Result so far: 381.0
If we take 261 away from 303, we end up with 42.
Bring next digit (2) of the dividend behind the 42 and repeat the process: 422 / 261

Advancing to step 6:
261 can be fit into 422 1 times, resulting in a remainder of 161.
Record the quotient 1 as the next digit in the result. 
Result so far: 3811.0
If we subtract 261 from 422, we get 161.
Bring next digit (1) of the dividend behind the 161 and repeat the process: 1611 / 261

Going ahead to step 7:
261 goes into 1611 6 times with a remainder of 45.
Write down 6 as next digit of the result. 
Result so far: 38116.0
Subtracting 1566 from 1611 leaves us with 45.
Grab the next digit (0) from the dividend, add it to 45, then carry on: 450 / 261

Let's proceed to step 8:
The number 261 fits into 450 1 times, leaving a remainder of 189.
The number 1 becomes the next digit in our result. 
Result so far: 381161.0
If we subtract 261 from 450, we get 189.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1890, and continue the process.

On to step 9:
261 goes into 1890 7 times with a remainder of 63.
Write down 7 as next digit of the result. 
Result so far: 381161.7
Deduct 1827 from 1890 and we're left with 63.
Since there are no more digits in the dividend, we add a zero to the remainder making it 630, and continue the process.

Advancing to step 10:
261 goes into 630 2 times with a remainder of 108.
Record the quotient 2 as the next digit in the result. 
Result so far: 381161.72
The remainder is 108 after subtracting 522 from 630.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1080, and continue the process.

Let's proceed to step 11:
When dividing 1080 by 261, we get 4 with a remainder of 36.
Write down 4 as next digit of the result. 
Result so far: 381161.724
Subtracting 1044 from 1080 leaves us with 36.
Since there are no more digits in the dividend, we add a zero to the remainder making it 360, and continue the process.

Going ahead to step 12:
When dividing 360 by 261, we get 1 with a remainder of 99.
The next digit of our result is 1. 
Result so far: 381161.7241
Subtracting 261 from 360 leaves us with 99.
Since there are no more digits in the dividend, we add a zero to the remainder making it 990, and continue the process.

Going ahead to step 13:
990 divided by 261 is 3 with a remainder of 207.
The number 3 becomes the next digit in our result. 
Result so far: 381161.72413
Subtracting 783 from 990 leaves us with 207.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2070, and continue the process.

On to step 14:
261 goes into 2070 7 times with a remainder of 243.
Put 7 as the next digit of the answer. 
Result so far: 381161.724137
Subtract 1827 from 2070 to get 243.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2430, and continue the process.

On to step 15:
The number 261 fits into 2430 9 times, leaving a remainder of 81.
Use 9 as the next digit of our solution. 
Result so far: 381161.7241379
The remainder is 81 after subtracting 2349 from 2430.
Since there are no more digits in the dividend, we add a zero to the remainder making it 810, and continue the process.

Let's proceed to step 16:
261 can be fit into 810 3 times, resulting in a remainder of 27.
Use 3 as the next digit of our solution. 
Result so far: 381161.72413793
Subtracting 783 from 810 leaves us with 27.
Since there are no more digits in the dividend, we add a zero to the remainder making it 270, and continue the process.

After the division, we end up with 381161.72413793 and a remainder of 2.7e-08.