77213320 ÷ 281 
The aim is to understand the frequency of 281 in 77213320.

On to step 1:
If we divide 7 by 281, we get 0 and a remainder of 7.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 7, we end up with 7.
Take the next digit (7) from the dividend and append it to 7, then repeat: 77 / 281

Step 2:
281 can be fit into 77 0 times, resulting in a remainder of 77.
The next digit of our result is 0. 
Result so far: 0.0
The remainder is 77 after subtracting 0 from 77.
Take the next digit (2) from the dividend and append it to 77, then repeat: 772 / 281

On to step 3:
281 can be fit into 772 2 times, resulting in a remainder of 210.
Put 2 as the next digit of the answer. 
Result so far: 2.0
If we take 562 away from 772, we end up with 210.
Append the next digit (1) from the dividend to 210 and continue with: 2101 / 281

Going ahead to step 4:
If we divide 2101 by 281, we get 7 and a remainder of 134.
Write down 7 as next digit of the result. 
Result so far: 27.0
Deduct 1967 from 2101 and we're left with 134.
Fetch the next digit (3) from the dividend, attach it to 134 and continue: 1343 / 281

On to step 5:
281 goes into 1343 4 times with a remainder of 219.
Put 4 as the next digit of the answer. 
Result so far: 274.0
If we take 1124 away from 1343, we end up with 219.
Take the next digit (3) from the dividend and append it to 219, then repeat: 2193 / 281

Advancing to step 6:
The number 281 fits into 2193 7 times, leaving a remainder of 226.
Record the quotient 7 as the next digit in the result. 
Result so far: 2747.0
Subtract 1967 from 2193 to get 226.
Take the next digit (2) from the dividend and append it to 226, then repeat: 2262 / 281

Let's proceed to step 7:
2262 divided by 281 is 8 with a remainder of 14.
Record the quotient 8 as the next digit in the result. 
Result so far: 27478.0
Subtracting 2248 from 2262 leaves us with 14.
Include the next digit (0) from the dividend after 14, then repeat: 140 / 281

Going ahead to step 8:
The number 281 fits into 140 0 times, leaving a remainder of 140.
Record the quotient 0 as the next digit in the result. 
Result so far: 274780.0
Deduct 0 from 140 and we're left with 140.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1400, and continue the process.

Let's proceed to step 9:
When dividing 1400 by 281, we get 4 with a remainder of 276.
Use 4 as the next digit of our solution. 
Result so far: 274780.4
If we subtract 1124 from 1400, we get 276.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2760, and continue the process.

Moving on to step 10:
When dividing 2760 by 281, we get 9 with a remainder of 231.
Put 9 as the next digit of the answer. 
Result so far: 274780.49
Subtracting 2529 from 2760 leaves us with 231.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2310, and continue the process.

Going ahead to step 11:
When dividing 2310 by 281, we get 8 with a remainder of 62.
The next digit of our result is 8. 
Result so far: 274780.498
The remainder is 62 after subtracting 2248 from 2310.
Since there are no more digits in the dividend, we add a zero to the remainder making it 620, and continue the process.

Moving on to step 12:
620 divided by 281 is 2 with a remainder of 58.
Record the quotient 2 as the next digit in the result. 
Result so far: 274780.4982
Subtracting 562 from 620 leaves us with 58.
Since there are no more digits in the dividend, we add a zero to the remainder making it 580, and continue the process.

Advancing to step 13:
281 can be fit into 580 2 times, resulting in a remainder of 18.
Use 2 as the next digit of our solution. 
Result so far: 274780.49822
Deduct 562 from 580 and we're left with 18.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

After the division, we end up with 274780.49822 and a remainder of 1.8e-05.