We look at the division of 77574250 by 391 
We want to figure out the number of times 77574250 can be divided by 391.

Let's proceed to step 1:
391 can be fit into 7 0 times, resulting in a remainder of 7.
Use 0 as the next digit of our solution. 
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 / 391

On to step 2:
If we divide 77 by 391, we get 0 and a remainder of 77.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 77, we get 77.
Append the next digit (5) from the dividend to 77 and continue with: 775 / 391

Let's proceed to step 3:
391 can be fit into 775 1 times, resulting in a remainder of 384.
Put 1 as the next digit of the answer. 
Result so far: 1.0
If we subtract 391 from 775, we get 384.
Fetch the next digit (7) from the dividend, attach it to 384 and continue: 3847 / 391

Advancing to step 4:
391 can be fit into 3847 9 times, resulting in a remainder of 328.
The number 9 becomes the next digit in our result. 
Result so far: 19.0
Deduct 3519 from 3847 and we're left with 328.
Include the next digit (4) from the dividend after 328, then repeat: 3284 / 391

Going ahead to step 5:
The number 391 fits into 3284 8 times, leaving a remainder of 156.
Write down 8 as next digit of the result. 
Result so far: 198.0
Deduct 3128 from 3284 and we're left with 156.
Take the next digit (2) from the dividend and append it to 156, then repeat: 1562 / 391

Step 6:
If we divide 1562 by 391, we get 3 and a remainder of 389.
Use 3 as the next digit of our solution. 
Result so far: 1983.0
If we take 1173 away from 1562, we end up with 389.
Take the next digit (5) from the dividend and append it to 389, then repeat: 3895 / 391

Going ahead to step 7:
The number 391 fits into 3895 9 times, leaving a remainder of 376.
Put 9 as the next digit of the answer. 
Result so far: 19839.0
Subtract 3519 from 3895 to get 376.
Grab the next digit (0) from the dividend, add it to 376, then carry on: 3760 / 391

Going ahead to step 8:
When dividing 3760 by 391, we get 9 with a remainder of 241.
The next digit of our result is 9. 
Result so far: 198399.0
Subtract 3519 from 3760 to get 241.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2410, and continue the process.

On to step 9:
391 goes into 2410 6 times with a remainder of 64.
Put 6 as the next digit of the answer. 
Result so far: 198399.6
Deduct 2346 from 2410 and we're left with 64.
Since there are no more digits in the dividend, we add a zero to the remainder making it 640, and continue the process.

Moving on to step 10:
391 goes into 640 1 times with a remainder of 249.
Write down 1 as next digit of the result. 
Result so far: 198399.61
Deduct 391 from 640 and we're left 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.

On to step 11:
2490 divided by 391 is 6 with a remainder of 144.
The next digit of our result is 6. 
Result so far: 198399.616
The remainder is 144 after subtracting 2346 from 2490.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1440, and continue the process.

Going ahead to step 12:
391 goes into 1440 3 times with a remainder of 267.
The number 3 becomes the next digit in our result. 
Result so far: 198399.6163
If we subtract 1173 from 1440, we get 267.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2670, and continue the process.

Let's proceed to step 13:
391 can be fit into 2670 6 times, resulting in a remainder of 324.
Write down 6 as next digit of the result. 
Result so far: 198399.61636
If we subtract 2346 from 2670, we get 324.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3240, and continue the process.

Going ahead to step 14:
The number 391 fits into 3240 8 times, leaving a remainder of 112.
Use 8 as the next digit of our solution. 
Result so far: 198399.616368
If we subtract 3128 from 3240, we get 112.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1120, and continue the process.

On to step 15:
1120 divided by 391 is 2 with a remainder of 338.
Put 2 as the next digit of the answer. 
Result so far: 198399.6163682
If we take 782 away from 1120, we end up with 338.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3380, and continue the process.

On to step 16:
391 goes into 3380 8 times with a remainder of 252.
Put 8 as the next digit of the answer. 
Result so far: 198399.61636828
The remainder is 252 after subtracting 3128 from 3380.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2520, and continue the process.

In conclusion, the division gives 198399.61636828 with a balance of 2.52e-07.