28567779 ÷ 391 
We want to figure out the number of times 28567779 can be divided by 391.

Going ahead to step 1:
When dividing 2 by 391, we get 0 with a remainder of 2.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 2 to get 2.
Fetch the next digit (8) from the dividend, attach it to 2 and continue: 28 / 391

Moving on to step 2:
When dividing 28 by 391, we get 0 with a remainder of 28.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 28 after subtracting 0 from 28.
Fetch the next digit (5) from the dividend, attach it to 28 and continue: 285 / 391

On to step 3:
If we divide 285 by 391, we get 0 and a remainder of 285.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we subtract 0 from 285, we get 285.
Take the next digit (6) from the dividend and append it to 285, then repeat: 2856 / 391

Moving on to step 4:
When dividing 2856 by 391, we get 7 with a remainder of 119.
Put 7 as the next digit of the answer. 
Result so far: 7.0
If we subtract 2737 from 2856, we get 119.
Grab the next digit (7) from the dividend, add it to 119, then carry on: 1197 / 391

Let's proceed to step 5:
391 goes into 1197 3 times with a remainder of 24.
Write down 3 as next digit of the result. 
Result so far: 73.0
Subtract 1173 from 1197 to get 24.
Grab the next digit (7) from the dividend, add it to 24, then carry on: 247 / 391

Advancing to step 6:
391 can be fit into 247 0 times, resulting in a remainder of 247.
Record the quotient 0 as the next digit in the result. 
Result so far: 730.0
If we take 0 away from 247, we end up with 247.
Grab the next digit (7) from the dividend, add it to 247, then carry on: 2477 / 391

Moving on to step 7:
391 goes into 2477 6 times with a remainder of 131.
The number 6 becomes the next digit in our result. 
Result so far: 7306.0
If we take 2346 away from 2477, we end up with 131.
Bring next digit (9) of the dividend behind the 131 and repeat the process: 1319 / 391

Step 8:
If we divide 1319 by 391, we get 3 and a remainder of 146.
The next digit of our result is 3. 
Result so far: 73063.0
Subtract 1173 from 1319 to get 146.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1460, and continue the process.

Moving on to step 9:
If we divide 1460 by 391, we get 3 and a remainder of 287.
The number 3 becomes the next digit in our result. 
Result so far: 73063.3
If we subtract 1173 from 1460, we get 287.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2870, and continue the process.

Moving on to step 10:
2870 divided by 391 is 7 with a remainder of 133.
Record the quotient 7 as the next digit in the result. 
Result so far: 73063.37
If we take 2737 away from 2870, we end up with 133.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1330, and continue the process.

Moving on to step 11:
When dividing 1330 by 391, we get 3 with a remainder of 157.
Record the quotient 3 as the next digit in the result. 
Result so far: 73063.373
If we subtract 1173 from 1330, we get 157.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1570, and continue the process.

Going ahead to step 12:
If we divide 1570 by 391, we get 4 and a remainder of 6.
The next digit of our result is 4. 
Result so far: 73063.3734
If we subtract 1564 from 1570, we get 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

On to step 13:
When dividing 60 by 391, we get 0 with a remainder of 60.
Write down 0 as next digit of the result. 
Result so far: 73063.3734
Subtracting 0 from 60 leaves us with 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

Step 14:
391 goes into 600 1 times with a remainder of 209.
The next digit of our result is 1. 
Result so far: 73063.373401
If we take 391 away from 600, we end up with 209.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2090, and continue the process.

Advancing to step 15:
If we divide 2090 by 391, we get 5 and a remainder of 135.
Use 5 as the next digit of our solution. 
Result so far: 73063.3734015
Subtract 1955 from 2090 to get 135.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1350, and continue the process.

Moving on to step 16:
If we divide 1350 by 391, we get 3 and a remainder of 177.
The next digit of our result is 3. 
Result so far: 73063.37340153
If we take 1173 away from 1350, we end up with 177.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1770, and continue the process.

After the division, we end up with 73063.37340153 and a remainder of 1.77e-07.