78278760 divided by 858 
Let's see how many times 858 fits into 78278760.

Advancing to step 1:
When dividing 7 by 858, we get 0 with a remainder of 7.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 7 to get 7.
Fetch the next digit (8) from the dividend, attach it to 7 and continue: 78 / 858

Moving on to step 2:
78 divided by 858 is 0 with a remainder of 78.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 78, we end up with 78.
Take the next digit (2) from the dividend and append it to 78, then repeat: 782 / 858

Step 3:
The number 858 fits into 782 0 times, leaving a remainder of 782.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtracting 0 from 782 leaves us with 782.
Grab the next digit (7) from the dividend, add it to 782, then carry on: 7827 / 858

Step 4:
858 can be fit into 7827 9 times, resulting in a remainder of 105.
Record the quotient 9 as the next digit in the result. 
Result so far: 9.0
Subtracting 7722 from 7827 leaves us with 105.
Bring next digit (8) of the dividend behind the 105 and repeat the process: 1058 / 858

Let's proceed to step 5:
858 can be fit into 1058 1 times, resulting in a remainder of 200.
Record the quotient 1 as the next digit in the result. 
Result so far: 91.0
Subtracting 858 from 1058 leaves us with 200.
Append the next digit (7) from the dividend to 200 and continue with: 2007 / 858

On to step 6:
858 goes into 2007 2 times with a remainder of 291.
Use 2 as the next digit of our solution. 
Result so far: 912.0
If we subtract 1716 from 2007, we get 291.
Append the next digit (6) from the dividend to 291 and continue with: 2916 / 858

Advancing to step 7:
If we divide 2916 by 858, we get 3 and a remainder of 342.
Use 3 as the next digit of our solution. 
Result so far: 9123.0
Subtract 2574 from 2916 to get 342.
Fetch the next digit (0) from the dividend, attach it to 342 and continue: 3420 / 858

Going ahead to step 8:
When dividing 3420 by 858, we get 3 with a remainder of 846.
The next digit of our result is 3. 
Result so far: 91233.0
Deduct 2574 from 3420 and we're left with 846.
Since there are no more digits in the dividend, we add a zero to the remainder making it 8460, and continue the process.

Step 9:
The number 858 fits into 8460 9 times, leaving a remainder of 738.
The number 9 becomes the next digit in our result. 
Result so far: 91233.9
If we take 7722 away from 8460, we end up with 738.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7380, and continue the process.

Going ahead to step 10:
7380 divided by 858 is 8 with a remainder of 516.
Use 8 as the next digit of our solution. 
Result so far: 91233.98
Deduct 6864 from 7380 and we're left with 516.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5160, and continue the process.

Going ahead to step 11:
858 goes into 5160 6 times with a remainder of 12.
Write down 6 as next digit of the result. 
Result so far: 91233.986
Deduct 5148 from 5160 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.

On to step 12:
120 divided by 858 is 0 with a remainder of 120.
Record the quotient 0 as the next digit in the result. 
Result so far: 91233.986
Deduct 0 from 120 and we're left with 120.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1200, and continue the process.

Step 13:
1200 divided by 858 is 1 with a remainder of 342.
The number 1 becomes the next digit in our result. 
Result so far: 91233.98601
Deduct 858 from 1200 and we're left with 342.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3420, and continue the process.

Going ahead to step 14:
858 can be fit into 3420 3 times, resulting in a remainder of 846.
The next digit of our result is 3. 
Result so far: 91233.986013
Subtracting 2574 from 3420 leaves us with 846.
Since there are no more digits in the dividend, we add a zero to the remainder making it 8460, and continue the process.

On to step 15:
8460 divided by 858 is 9 with a remainder of 738.
Write down 9 as next digit of the result. 
Result so far: 91233.9860139
The remainder is 738 after subtracting 7722 from 8460.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7380, and continue the process.

On to step 16:
If we divide 7380 by 858, we get 8 and a remainder of 516.
The number 8 becomes the next digit in our result. 
Result so far: 91233.98601398
If we take 6864 away from 7380, we end up with 516.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5160, and continue the process.

The quotient of the division is 91233.98601398, and the remainder is 5.16e-07.