We're dividing 153980 by 85 
Our goal is to divide 153980 by 85.

Advancing to step 1:
85 goes into 1 0 times with a remainder of 1.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 1 to get 1.
Bring next digit (5) of the dividend behind the 1 and repeat the process: 15 / 85

Moving on to step 2:
85 can be fit into 15 0 times, resulting in a remainder of 15.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 15, we get 15.
Bring next digit (3) of the dividend behind the 15 and repeat the process: 153 / 85

Advancing to step 3:
If we divide 153 by 85, we get 1 and a remainder of 68.
Use 1 as the next digit of our solution. 
Result so far: 1.0
If we take 85 away from 153, we end up with 68.
Bring next digit (9) of the dividend behind the 68 and repeat the process: 689 / 85

Step 4:
The number 85 fits into 689 8 times, leaving a remainder of 9.
Put 8 as the next digit of the answer. 
Result so far: 18.0
Subtract 680 from 689 to get 9.
Include the next digit (8) from the dividend after 9, then repeat: 98 / 85

On to step 5:
85 goes into 98 1 times with a remainder of 13.
Put 1 as the next digit of the answer. 
Result so far: 181.0
Subtracting 85 from 98 leaves us with 13.
Take the next digit (0) from the dividend and append it to 13, then repeat: 130 / 85

Advancing to step 6:
The number 85 fits into 130 1 times, leaving a remainder of 45.
Put 1 as the next digit of the answer. 
Result so far: 1811.0
If we take 85 away from 130, we end up with 45.
Since there are no more digits in the dividend, we add a zero to the remainder making it 450, and continue the process.

Let's proceed to step 7:
When dividing 450 by 85, we get 5 with a remainder of 25.
The number 5 becomes the next digit in our result. 
Result so far: 1811.5
The remainder is 25 after subtracting 425 from 450.
Since there are no more digits in the dividend, we add a zero to the remainder making it 250, and continue the process.

Advancing to step 8:
If we divide 250 by 85, we get 2 and a remainder of 80.
The next digit of our result is 2. 
Result so far: 1811.52
If we take 170 away from 250, we end up with 80.
Since there are no more digits in the dividend, we add a zero to the remainder making it 800, and continue the process.

Step 9:
800 divided by 85 is 9 with a remainder of 35.
The number 9 becomes the next digit in our result. 
Result so far: 1811.529
Subtracting 765 from 800 leaves us 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.

Moving on to step 10:
The number 85 fits into 350 4 times, leaving a remainder of 10.
Put 4 as the next digit of the answer. 
Result so far: 1811.5294
If we subtract 340 from 350, we get 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Moving on to step 11:
85 goes into 100 1 times with a remainder of 15.
The number 1 becomes the next digit in our result. 
Result so far: 1811.52941
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.

On to step 12:
When dividing 150 by 85, we get 1 with a remainder of 65.
The next digit of our result is 1. 
Result so far: 1811.529411
Deduct 85 from 150 and we're left with 65.
Since there are no more digits in the dividend, we add a zero to the remainder making it 650, and continue the process.

The final result is 1811.529411 with a remainder of 6.5e-06.