We're dividing 78366979 by 503 
Let's see how many times 503 fits into 78366979.

Advancing to step 1:
When dividing 7 by 503, we get 0 with a remainder of 7.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 7, we end up with 7.
Bring next digit (8) of the dividend behind the 7 and repeat the process: 78 / 503

Moving on to step 2:
503 can be fit into 78 0 times, resulting in a remainder of 78.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 78 after subtracting 0 from 78.
Take the next digit (3) from the dividend and append it to 78, then repeat: 783 / 503

Moving on to step 3:
783 divided by 503 is 1 with a remainder of 280.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
Deduct 503 from 783 and we're left with 280.
Take the next digit (6) from the dividend and append it to 280, then repeat: 2806 / 503

Going ahead to step 4:
When dividing 2806 by 503, we get 5 with a remainder of 291.
The next digit of our result is 5. 
Result so far: 15.0
If we subtract 2515 from 2806, we get 291.
Take the next digit (6) from the dividend and append it to 291, then repeat: 2916 / 503

Step 5:
503 can be fit into 2916 5 times, resulting in a remainder of 401.
Put 5 as the next digit of the answer. 
Result so far: 155.0
The remainder is 401 after subtracting 2515 from 2916.
Take the next digit (9) from the dividend and append it to 401, then repeat: 4019 / 503

Advancing to step 6:
The number 503 fits into 4019 7 times, leaving a remainder of 498.
The number 7 becomes the next digit in our result. 
Result so far: 1557.0
Deduct 3521 from 4019 and we're left with 498.
Grab the next digit (7) from the dividend, add it to 498, then carry on: 4987 / 503

Advancing to step 7:
If we divide 4987 by 503, we get 9 and a remainder of 460.
The next digit of our result is 9. 
Result so far: 15579.0
Subtract 4527 from 4987 to get 460.
Grab the next digit (9) from the dividend, add it to 460, then carry on: 4609 / 503

Step 8:
4609 divided by 503 is 9 with a remainder of 82.
Use 9 as the next digit of our solution. 
Result so far: 155799.0
Subtracting 4527 from 4609 leaves us with 82.
Since there are no more digits in the dividend, we add a zero to the remainder making it 820, and continue the process.

Advancing to step 9:
503 can be fit into 820 1 times, resulting in a remainder of 317.
The number 1 becomes the next digit in our result. 
Result so far: 155799.1
The remainder is 317 after subtracting 503 from 820.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3170, and continue the process.

Advancing to step 10:
3170 divided by 503 is 6 with a remainder of 152.
Use 6 as the next digit of our solution. 
Result so far: 155799.16
If we take 3018 away from 3170, we end up with 152.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1520, and continue the process.

Moving on to step 11:
503 can be fit into 1520 3 times, resulting in a remainder of 11.
Use 3 as the next digit of our solution. 
Result so far: 155799.163
If we take 1509 away from 1520, we end up with 11.
Since there are no more digits in the dividend, we add a zero to the remainder making it 110, and continue the process.

Going ahead to step 12:
110 divided by 503 is 0 with a remainder of 110.
Use 0 as the next digit of our solution. 
Result so far: 155799.163
Deduct 0 from 110 and we're left with 110.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1100, and continue the process.

Step 13:
503 goes into 1100 2 times with a remainder of 94.
Record the quotient 2 as the next digit in the result. 
Result so far: 155799.16302
If we subtract 1006 from 1100, we get 94.
Since there are no more digits in the dividend, we add a zero to the remainder making it 940, and continue the process.

Advancing to step 14:
When dividing 940 by 503, we get 1 with a remainder of 437.
The next digit of our result is 1. 
Result so far: 155799.163021
Subtracting 503 from 940 leaves us with 437.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4370, and continue the process.

Let's proceed to step 15:
If we divide 4370 by 503, we get 8 and a remainder of 346.
Record the quotient 8 as the next digit in the result. 
Result so far: 155799.1630218
Subtracting 4024 from 4370 leaves us with 346.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3460, and continue the process.

Step 16:
When dividing 3460 by 503, we get 6 with a remainder of 442.
Record the quotient 6 as the next digit in the result. 
Result so far: 155799.16302186
Deduct 3018 from 3460 and we're left with 442.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4420, and continue the process.

In conclusion, the division gives 155799.16302186 with a balance of 4.42e-07.