Let's divide 354980 by 81
Our goal is to divide 354980 by 81.

Step 1:
The number 81 fits into 3 0 times, leaving a remainder of 3.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtracting 0 from 3 leaves us with 3.
Bring next digit (5) of the dividend behind the 3 and repeat the process: 35 / 81

On to step 2:
81 can be fit into 35 0 times, resulting in a remainder of 35.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 35, we end up with 35.
Fetch the next digit (4) from the dividend, attach it to 35 and continue: 354 / 81

On to step 3:
The number 81 fits into 354 4 times, leaving a remainder of 30.
The next digit of our result is 4. 
Result so far: 4.0
Subtract 324 from 354 to get 30.
Include the next digit (9) from the dividend after 30, then repeat: 309 / 81

Step 4:
81 can be fit into 309 3 times, resulting in a remainder of 66.
Use 3 as the next digit of our solution. 
Result so far: 43.0
Deduct 243 from 309 and we're left with 66.
Take the next digit (8) from the dividend and append it to 66, then repeat: 668 / 81

Advancing to step 5:
81 can be fit into 668 8 times, resulting in a remainder of 20.
The number 8 becomes the next digit in our result. 
Result so far: 438.0
Subtracting 648 from 668 leaves us with 20.
Append the next digit (0) from the dividend to 20 and continue with: 200 / 81

Let's proceed to step 6:
If we divide 200 by 81, we get 2 and a remainder of 38.
Use 2 as the next digit of our solution. 
Result so far: 4382.0
If we subtract 162 from 200, we get 38.
Since there are no more digits in the dividend, we add a zero to the remainder making it 380, and continue the process.

Advancing to step 7:
81 can be fit into 380 4 times, resulting in a remainder of 56.
The next digit of our result is 4. 
Result so far: 4382.4
Deduct 324 from 380 and we're left with 56.
Since there are no more digits in the dividend, we add a zero to the remainder making it 560, and continue the process.

On to step 8:
81 can be fit into 560 6 times, resulting in a remainder of 74.
Use 6 as the next digit of our solution. 
Result so far: 4382.46
Subtracting 486 from 560 leaves us with 74.
Since there are no more digits in the dividend, we add a zero to the remainder making it 740, and continue the process.

On to step 9:
81 goes into 740 9 times with a remainder of 11.
Put 9 as the next digit of the answer. 
Result so far: 4382.469
The remainder is 11 after subtracting 729 from 740.
Since there are no more digits in the dividend, we add a zero to the remainder making it 110, and continue the process.

Advancing to step 10:
If we divide 110 by 81, we get 1 and a remainder of 29.
Record the quotient 1 as the next digit in the result. 
Result so far: 4382.4691
If we subtract 81 from 110, we get 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 11:
The number 81 fits into 290 3 times, leaving a remainder of 47.
Write down 3 as next digit of the result. 
Result so far: 4382.46913
The remainder is 47 after subtracting 243 from 290.
Since there are no more digits in the dividend, we add a zero to the remainder making it 470, and continue the process.

Going ahead to step 12:
81 goes into 470 5 times with a remainder of 65.
Use 5 as the next digit of our solution. 
Result so far: 4382.469135
If we take 405 away from 470, we end up 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.

Going ahead to step 13:
The number 81 fits into 650 8 times, leaving a remainder of 2.
Write down 8 as next digit of the result. 
Result so far: 4382.4691358
Subtract 648 from 650 to 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 14:
If we divide 20 by 81, we get 0 and a remainder of 20.
Put 0 as the next digit of the answer. 
Result so far: 4382.4691358
If we take 0 away from 20, we end up with 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

The final result is 4382.4691358 with a remainder of 2e-08.