We divide 77979197 by 621
We want to divide 77979197 by 621.

Advancing to step 1:
621 can be fit into 7 0 times, resulting in a remainder of 7.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 7 after subtracting 0 from 7.
Take the next digit (7) from the dividend and append it to 7, then repeat: 77 / 621

Let's proceed to step 2:
621 can be fit into 77 0 times, resulting in a remainder of 77.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 77 leaves us with 77.
Grab the next digit (9) from the dividend, add it to 77, then carry on: 779 / 621

Going ahead to step 3:
621 goes into 779 1 times with a remainder of 158.
Use 1 as the next digit of our solution. 
Result so far: 1.0
Deduct 621 from 779 and we're left with 158.
Fetch the next digit (7) from the dividend, attach it to 158 and continue: 1587 / 621

Advancing to step 4:
When dividing 1587 by 621, we get 2 with a remainder of 345.
Write down 2 as next digit of the result. 
Result so far: 12.0
The remainder is 345 after subtracting 1242 from 1587.
Take the next digit (9) from the dividend and append it to 345, then repeat: 3459 / 621

Going ahead to step 5:
The number 621 fits into 3459 5 times, leaving a remainder of 354.
Write down 5 as next digit of the result. 
Result so far: 125.0
The remainder is 354 after subtracting 3105 from 3459.
Fetch the next digit (1) from the dividend, attach it to 354 and continue: 3541 / 621

Going ahead to step 6:
3541 divided by 621 is 5 with a remainder of 436.
Record the quotient 5 as the next digit in the result. 
Result so far: 1255.0
If we take 3105 away from 3541, we end up with 436.
Grab the next digit (9) from the dividend, add it to 436, then carry on: 4369 / 621

Let's proceed to step 7:
4369 divided by 621 is 7 with a remainder of 22.
Record the quotient 7 as the next digit in the result. 
Result so far: 12557.0
If we take 4347 away from 4369, we end up with 22.
Fetch the next digit (7) from the dividend, attach it to 22 and continue: 227 / 621

Moving on to step 8:
If we divide 227 by 621, we get 0 and a remainder of 227.
Put 0 as the next digit of the answer. 
Result so far: 125570.0
The remainder is 227 after subtracting 0 from 227.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2270, and continue the process.

Moving on to step 9:
The number 621 fits into 2270 3 times, leaving a remainder of 407.
The number 3 becomes the next digit in our result. 
Result so far: 125570.3
If we take 1863 away from 2270, we end up with 407.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4070, and continue the process.

Let's proceed to step 10:
When dividing 4070 by 621, we get 6 with a remainder of 344.
Put 6 as the next digit of the answer. 
Result so far: 125570.36
If we take 3726 away from 4070, we end up with 344.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3440, and continue the process.

Step 11:
621 can be fit into 3440 5 times, resulting in a remainder of 335.
The number 5 becomes the next digit in our result. 
Result so far: 125570.365
Subtracting 3105 from 3440 leaves us with 335.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3350, and continue the process.

Step 12:
621 goes into 3350 5 times with a remainder of 245.
The number 5 becomes the next digit in our result. 
Result so far: 125570.3655
Deduct 3105 from 3350 and we're left with 245.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2450, and continue the process.

The final result is 125570.3655 with a remainder of 0.00245.