99121781 divided by 679 
Let's see how many times 679 fits into 99121781.

Advancing to step 1:
679 goes into 9 0 times with a remainder of 9.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 9 leaves us with 9.
Bring next digit (9) of the dividend behind the 9 and repeat the process: 99 / 679

Let's proceed to step 2:
99 divided by 679 is 0 with a remainder of 99.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 99 after subtracting 0 from 99.
Include the next digit (1) from the dividend after 99, then repeat: 991 / 679

Going ahead to step 3:
If we divide 991 by 679, we get 1 and a remainder of 312.
Write down 1 as next digit of the result. 
Result so far: 1.0
Deduct 679 from 991 and we're left with 312.
Grab the next digit (2) from the dividend, add it to 312, then carry on: 3122 / 679

On to step 4:
679 goes into 3122 4 times with a remainder of 406.
Use 4 as the next digit of our solution. 
Result so far: 14.0
If we subtract 2716 from 3122, we get 406.
Bring next digit (1) of the dividend behind the 406 and repeat the process: 4061 / 679

On to step 5:
If we divide 4061 by 679, we get 5 and a remainder of 666.
Put 5 as the next digit of the answer. 
Result so far: 145.0
The remainder is 666 after subtracting 3395 from 4061.
Append the next digit (7) from the dividend to 666 and continue with: 6667 / 679

Step 6:
679 goes into 6667 9 times with a remainder of 556.
Use 9 as the next digit of our solution. 
Result so far: 1459.0
Subtract 6111 from 6667 to get 556.
Grab the next digit (8) from the dividend, add it to 556, then carry on: 5568 / 679

On to step 7:
If we divide 5568 by 679, we get 8 and a remainder of 136.
Write down 8 as next digit of the result. 
Result so far: 14598.0
Subtracting 5432 from 5568 leaves us with 136.
Bring next digit (1) of the dividend behind the 136 and repeat the process: 1361 / 679

On to step 8:
If we divide 1361 by 679, we get 2 and a remainder of 3.
The next digit of our result is 2. 
Result so far: 145982.0
If we take 1358 away from 1361, we end up with 3.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

Going ahead to step 9:
The number 679 fits into 30 0 times, leaving a remainder of 30.
Write down 0 as next digit of the result. 
Result so far: 145982.0
If we subtract 0 from 30, we get 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

Step 10:
When dividing 300 by 679, we get 0 with a remainder of 300.
Record the quotient 0 as the next digit in the result. 
Result so far: 145982.0
Subtracting 0 from 300 leaves us with 300.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3000, and continue the process.

The final result is 145982.0 with a remainder of 0.3.