We look at the division of 873858 by 8 
We want to figure out the number of times 873858 can be divided by 8.

Moving on to step 1:
When dividing 8 by 8, we get 1 with a remainder of 0.
Put 1 as the next digit of the answer. 
Result so far: 1.0
Subtracting 8 from 8 leaves us with 0.
Bring next digit (7) of the dividend behind the 0 and repeat the process: 7 / 8

Advancing to step 2:
8 goes into 7 0 times with a remainder of 7.
Use 0 as the next digit of our solution. 
Result so far: 10.0
Deduct 0 from 7 and we're left with 7.
Bring next digit (3) of the dividend behind the 7 and repeat the process: 73 / 8

Moving on to step 3:
8 goes into 73 9 times with a remainder of 1.
Use 9 as the next digit of our solution. 
Result so far: 109.0
If we subtract 72 from 73, we get 1.
Fetch the next digit (8) from the dividend, attach it to 1 and continue: 18 / 8

Going ahead to step 4:
If we divide 18 by 8, we get 2 and a remainder of 2.
The number 2 becomes the next digit in our result. 
Result so far: 1092.0
Subtracting 16 from 18 leaves us with 2.
Append the next digit (5) from the dividend to 2 and continue with: 25 / 8

Moving on to step 5:
When dividing 25 by 8, we get 3 with a remainder of 1.
The next digit of our result is 3. 
Result so far: 10923.0
The remainder is 1 after subtracting 24 from 25.
Bring next digit (8) of the dividend behind the 1 and repeat the process: 18 / 8

Step 6:
If we divide 18 by 8, we get 2 and a remainder of 2.
Write down 2 as next digit of the result. 
Result so far: 109232.0
If we subtract 16 from 18, we get 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Step 7:
The number 8 fits into 20 2 times, leaving a remainder of 4.
Record the quotient 2 as the next digit in the result. 
Result so far: 109232.2
Deduct 16 from 20 and we're left with 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Let's proceed to step 8:
If we divide 40 by 8, we get 5 and a remainder of 0.
Put 5 as the next digit of the answer. 
Result so far: 109232.25
Deduct 40 from 40 and we're left with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Going ahead to step 9:
The number 8 fits into 0 0 times, leaving a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 109232.25
The remainder is 0 after subtracting 0 from 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Moving on to step 10:
The number 8 fits into 0 0 times, leaving a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 109232.25
If we take 0 away from 0, we end up with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

The quotient of the division is 109232.25, and the remainder is 0.0.