602091 divided by 78 
Let's see how many times 78 fits into 602091.

Advancing to step 1:
78 can be fit into 6 0 times, resulting in a remainder of 6.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 6 after subtracting 0 from 6.
Append the next digit (0) from the dividend to 6 and continue with: 60 / 78

Let's proceed to step 2:
60 divided by 78 is 0 with a remainder of 60.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 60 to get 60.
Take the next digit (2) from the dividend and append it to 60, then repeat: 602 / 78

Step 3:
If we divide 602 by 78, we get 7 and a remainder of 56.
Record the quotient 7 as the next digit in the result. 
Result so far: 7.0
If we take 546 away from 602, we end up with 56.
Include the next digit (0) from the dividend after 56, then repeat: 560 / 78

Let's proceed to step 4:
78 can be fit into 560 7 times, resulting in a remainder of 14.
Record the quotient 7 as the next digit in the result. 
Result so far: 77.0
Subtract 546 from 560 to get 14.
Take the next digit (9) from the dividend and append it to 14, then repeat: 149 / 78

Going ahead to step 5:
If we divide 149 by 78, we get 1 and a remainder of 71.
Write down 1 as next digit of the result. 
Result so far: 771.0
The remainder is 71 after subtracting 78 from 149.
Take the next digit (1) from the dividend and append it to 71, then repeat: 711 / 78

Moving on to step 6:
The number 78 fits into 711 9 times, leaving a remainder of 9.
The number 9 becomes the next digit in our result. 
Result so far: 7719.0
If we subtract 702 from 711, we get 9.
Since there are no more digits in the dividend, we add a zero to the remainder making it 90, and continue the process.

Going ahead to step 7:
78 goes into 90 1 times with a remainder of 12.
The number 1 becomes the next digit in our result. 
Result so far: 7719.1
Deduct 78 from 90 and we're left with 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

Let's proceed to step 8:
When dividing 120 by 78, we get 1 with a remainder of 42.
Put 1 as the next digit of the answer. 
Result so far: 7719.11
The remainder is 42 after subtracting 78 from 120.
Since there are no more digits in the dividend, we add a zero to the remainder making it 420, and continue the process.

The final result is 7719.11 with a remainder of 0.042.