Let's divide 390859 by 77
We want to figure out the number of times 390859 can be divided by 77.

Step 1:
77 goes into 3 0 times with a remainder of 3.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 3 to get 3.
Grab the next digit (9) from the dividend, add it to 3, then carry on: 39 / 77

Advancing to step 2:
77 can be fit into 39 0 times, resulting in a remainder of 39.
Write down 0 as next digit of the result. 
Result so far: 0.0
The remainder is 39 after subtracting 0 from 39.
Bring next digit (0) of the dividend behind the 39 and repeat the process: 390 / 77

Let's proceed to step 3:
When dividing 390 by 77, we get 5 with a remainder of 5.
The number 5 becomes the next digit in our result. 
Result so far: 5.0
If we subtract 385 from 390, we get 5.
Grab the next digit (8) from the dividend, add it to 5, then carry on: 58 / 77

Moving on to step 4:
If we divide 58 by 77, we get 0 and a remainder of 58.
The number 0 becomes the next digit in our result. 
Result so far: 50.0
Subtract 0 from 58 to get 58.
Fetch the next digit (5) from the dividend, attach it to 58 and continue: 585 / 77

Let's proceed to step 5:
When dividing 585 by 77, we get 7 with a remainder of 46.
Record the quotient 7 as the next digit in the result. 
Result so far: 507.0
Deduct 539 from 585 and we're left with 46.
Append the next digit (9) from the dividend to 46 and continue with: 469 / 77

Advancing to step 6:
77 can be fit into 469 6 times, resulting in a remainder of 7.
Record the quotient 6 as the next digit in the result. 
Result so far: 5076.0
Subtract 462 from 469 to get 7.
Since there are no more digits in the dividend, we add a zero to the remainder making it 70, and continue the process.

Advancing to step 7:
77 goes into 70 0 times with a remainder of 70.
The number 0 becomes the next digit in our result. 
Result so far: 5076.0
Deduct 0 from 70 and we're left with 70.
Since there are no more digits in the dividend, we add a zero to the remainder making it 700, and continue the process.

Step 8:
If we divide 700 by 77, we get 9 and a remainder of 7.
Put 9 as the next digit of the answer. 
Result so far: 5076.09
Deduct 693 from 700 and we're left with 7.
Since there are no more digits in the dividend, we add a zero to the remainder making it 70, and continue the process.

Advancing to step 9:
The number 77 fits into 70 0 times, leaving a remainder of 70.
Record the quotient 0 as the next digit in the result. 
Result so far: 5076.09
Subtracting 0 from 70 leaves us with 70.
Since there are no more digits in the dividend, we add a zero to the remainder making it 700, and continue the process.

Advancing to step 10:
The number 77 fits into 700 9 times, leaving a remainder of 7.
The next digit of our result is 9. 
Result so far: 5076.0909
Subtract 693 from 700 to get 7.
Since there are no more digits in the dividend, we add a zero to the remainder making it 70, and continue the process.

Step 11:
When dividing 70 by 77, we get 0 with a remainder of 70.
Write down 0 as next digit of the result. 
Result so far: 5076.0909
Subtracting 0 from 70 leaves us with 70.
Since there are no more digits in the dividend, we add a zero to the remainder making it 700, and continue the process.

Step 12:
If we divide 700 by 77, we get 9 and a remainder of 7.
Write down 9 as next digit of the result. 
Result so far: 5076.090909
The remainder is 7 after subtracting 693 from 700.
Since there are no more digits in the dividend, we add a zero to the remainder making it 70, and continue the process.

Let's proceed to step 13:
When dividing 70 by 77, we get 0 with a remainder of 70.
Write down 0 as next digit of the result. 
Result so far: 5076.090909
If we take 0 away from 70, we end up with 70.
Since there are no more digits in the dividend, we add a zero to the remainder making it 700, and continue the process.

Going ahead to step 14:
700 divided by 77 is 9 with a remainder of 7.
Record the quotient 9 as the next digit in the result. 
Result so far: 5076.09090909
The remainder is 7 after subtracting 693 from 700.
Since there are no more digits in the dividend, we add a zero to the remainder making it 70, and continue the process.

In conclusion, the division gives 5076.09090909 with a balance of 7e-09.