123109 divided by 85 
Let's see how many times 85 fits into 123109.

Step 1:
If we divide 1 by 85, we get 0 and a remainder of 1.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 1 to get 1.
Bring next digit (2) of the dividend behind the 1 and repeat the process: 12 / 85

On to step 2:
12 divided by 85 is 0 with a remainder of 12.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 12, we end up with 12.
Fetch the next digit (3) from the dividend, attach it to 12 and continue: 123 / 85

Moving on to step 3:
123 divided by 85 is 1 with a remainder of 38.
Use 1 as the next digit of our solution. 
Result so far: 1.0
Deduct 85 from 123 and we're left with 38.
Bring next digit (1) of the dividend behind the 38 and repeat the process: 381 / 85

Let's proceed to step 4:
When dividing 381 by 85, we get 4 with a remainder of 41.
Put 4 as the next digit of the answer. 
Result so far: 14.0
Deduct 340 from 381 and we're left with 41.
Take the next digit (0) from the dividend and append it to 41, then repeat: 410 / 85

Moving on to step 5:
The number 85 fits into 410 4 times, leaving a remainder of 70.
The number 4 becomes the next digit in our result. 
Result so far: 144.0
Deduct 340 from 410 and we're left with 70.
Take the next digit (9) from the dividend and append it to 70, then repeat: 709 / 85

Step 6:
85 goes into 709 8 times with a remainder of 29.
Record the quotient 8 as the next digit in the result. 
Result so far: 1448.0
Subtracting 680 from 709 leaves us with 29.
Since there are no more digits in the dividend, we add a zero to the remainder making it 290, and continue the process.

Advancing to step 7:
290 divided by 85 is 3 with a remainder of 35.
Record the quotient 3 as the next digit in the result. 
Result so far: 1448.3
If we take 255 away from 290, we end up with 35.
Since there are no more digits in the dividend, we add a zero to the remainder making it 350, and continue the process.

Let's proceed to step 8:
85 can be fit into 350 4 times, resulting in a remainder of 10.
Put 4 as the next digit of the answer. 
Result so far: 1448.34
The remainder is 10 after subtracting 340 from 350.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Going ahead to step 9:
85 goes into 100 1 times with a remainder of 15.
Record the quotient 1 as the next digit in the result. 
Result so far: 1448.341
Subtract 85 from 100 to get 15.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

Advancing to step 10:
The number 85 fits into 150 1 times, leaving a remainder of 65.
Record the quotient 1 as the next digit in the result. 
Result so far: 1448.3411
The remainder is 65 after subtracting 85 from 150.
Since there are no more digits in the dividend, we add a zero to the remainder making it 650, and continue the process.

After the division, we end up with 1448.3411 and a remainder of 0.00065.