Let's divide 80420717 by 261
The aim is to understand the frequency of 261 in 80420717.

Advancing to step 1:
261 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
If we take 0 away from 8, we end up with 8.
Grab the next digit (0) from the dividend, add it to 8, then carry on: 80 / 261

Moving on to step 2:
If we divide 80 by 261, we get 0 and a remainder of 80.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we subtract 0 from 80, we get 80.
Include the next digit (4) from the dividend after 80, then repeat: 804 / 261

Step 3:
261 goes into 804 3 times with a remainder of 21.
Put 3 as the next digit of the answer. 
Result so far: 3.0
Deduct 783 from 804 and we're left with 21.
Fetch the next digit (2) from the dividend, attach it to 21 and continue: 212 / 261

Advancing to step 4:
261 goes into 212 0 times with a remainder of 212.
Record the quotient 0 as the next digit in the result. 
Result so far: 30.0
The remainder is 212 after subtracting 0 from 212.
Include the next digit (0) from the dividend after 212, then repeat: 2120 / 261

Going ahead to step 5:
2120 divided by 261 is 8 with a remainder of 32.
Put 8 as the next digit of the answer. 
Result so far: 308.0
If we subtract 2088 from 2120, we get 32.
Append the next digit (7) from the dividend to 32 and continue with: 327 / 261

Advancing to step 6:
The number 261 fits into 327 1 times, leaving a remainder of 66.
Use 1 as the next digit of our solution. 
Result so far: 3081.0
The remainder is 66 after subtracting 261 from 327.
Grab the next digit (1) from the dividend, add it to 66, then carry on: 661 / 261

Going ahead to step 7:
661 divided by 261 is 2 with a remainder of 139.
The next digit of our result is 2. 
Result so far: 30812.0
If we take 522 away from 661, we end up with 139.
Append the next digit (7) from the dividend to 139 and continue with: 1397 / 261

On to step 8:
When dividing 1397 by 261, we get 5 with a remainder of 92.
Put 5 as the next digit of the answer. 
Result so far: 308125.0
Subtract 1305 from 1397 to get 92.
Since there are no more digits in the dividend, we add a zero to the remainder making it 920, and continue the process.

Going ahead to step 9:
If we divide 920 by 261, we get 3 and a remainder of 137.
Put 3 as the next digit of the answer. 
Result so far: 308125.3
Deduct 783 from 920 and we're left with 137.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1370, and continue the process.

Going ahead to step 10:
261 goes into 1370 5 times with a remainder of 65.
Use 5 as the next digit of our solution. 
Result so far: 308125.35
Subtracting 1305 from 1370 leaves us with 65.
Since there are no more digits in the dividend, we add a zero to the remainder making it 650, and continue the process.

On to step 11:
The number 261 fits into 650 2 times, leaving a remainder of 128.
Write down 2 as next digit of the result. 
Result so far: 308125.352
If we subtract 522 from 650, we get 128.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1280, and continue the process.

Step 12:
If we divide 1280 by 261, we get 4 and a remainder of 236.
Record the quotient 4 as the next digit in the result. 
Result so far: 308125.3524
If we subtract 1044 from 1280, we get 236.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2360, and continue the process.

Step 13:
The number 261 fits into 2360 9 times, leaving a remainder of 11.
Record the quotient 9 as the next digit in the result. 
Result so far: 308125.35249
Subtracting 2349 from 2360 leaves us with 11.
Since there are no more digits in the dividend, we add a zero to the remainder making it 110, and continue the process.

Moving on to step 14:
When dividing 110 by 261, we get 0 with a remainder of 110.
Put 0 as the next digit of the answer. 
Result so far: 308125.35249
Subtracting 0 from 110 leaves us with 110.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1100, and continue the process.

Step 15:
1100 divided by 261 is 4 with a remainder of 56.
Write down 4 as next digit of the result. 
Result so far: 308125.3524904
If we subtract 1044 from 1100, we get 56.
Since there are no more digits in the dividend, we add a zero to the remainder making it 560, and continue the process.

On to step 16:
The number 261 fits into 560 2 times, leaving a remainder of 38.
The number 2 becomes the next digit in our result. 
Result so far: 308125.35249042
Subtract 522 from 560 to get 38.
Since there are no more digits in the dividend, we add a zero to the remainder making it 380, and continue the process.

The quotient of the division is 308125.35249042, and the remainder is 3.8e-08.