54123809 divided by 89 
Let's see how many times 89 fits into 54123809.

Moving on to step 1:
If we divide 5 by 89, we get 0 and a remainder of 5.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 5 leaves us with 5.
Grab the next digit (4) from the dividend, add it to 5, then carry on: 54 / 89

Advancing to step 2:
54 divided by 89 is 0 with a remainder of 54.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 54, we get 54.
Include the next digit (1) from the dividend after 54, then repeat: 541 / 89

Let's proceed to step 3:
89 can be fit into 541 6 times, resulting in a remainder of 7.
The next digit of our result is 6. 
Result so far: 6.0
Subtract 534 from 541 to get 7.
Fetch the next digit (2) from the dividend, attach it to 7 and continue: 72 / 89

On to step 4:
89 goes into 72 0 times with a remainder of 72.
The next digit of our result is 0. 
Result so far: 60.0
If we take 0 away from 72, we end up with 72.
Include the next digit (3) from the dividend after 72, then repeat: 723 / 89

Let's proceed to step 5:
89 can be fit into 723 8 times, resulting in a remainder of 11.
The number 8 becomes the next digit in our result. 
Result so far: 608.0
The remainder is 11 after subtracting 712 from 723.
Include the next digit (8) from the dividend after 11, then repeat: 118 / 89

On to step 6:
If we divide 118 by 89, we get 1 and a remainder of 29.
The number 1 becomes the next digit in our result. 
Result so far: 6081.0
The remainder is 29 after subtracting 89 from 118.
Fetch the next digit (0) from the dividend, attach it to 29 and continue: 290 / 89

Let's proceed to step 7:
290 divided by 89 is 3 with a remainder of 23.
Use 3 as the next digit of our solution. 
Result so far: 60813.0
Subtract 267 from 290 to get 23.
Take the next digit (9) from the dividend and append it to 23, then repeat: 239 / 89

Advancing to step 8:
89 goes into 239 2 times with a remainder of 61.
Record the quotient 2 as the next digit in the result. 
Result so far: 608132.0
If we take 178 away from 239, we end up with 61.
Since there are no more digits in the dividend, we add a zero to the remainder making it 610, and continue the process.

On to step 9:
When dividing 610 by 89, we get 6 with a remainder of 76.
The next digit of our result is 6. 
Result so far: 608132.6
Subtract 534 from 610 to get 76.
Since there are no more digits in the dividend, we add a zero to the remainder making it 760, and continue the process.

Advancing to step 10:
The number 89 fits into 760 8 times, leaving a remainder of 48.
The number 8 becomes the next digit in our result. 
Result so far: 608132.68
Subtract 712 from 760 to get 48.
Since there are no more digits in the dividend, we add a zero to the remainder making it 480, and continue the process.

Step 11:
If we divide 480 by 89, we get 5 and a remainder of 35.
Record the quotient 5 as the next digit in the result. 
Result so far: 608132.685
If we subtract 445 from 480, we get 35.
Since there are no more digits in the dividend, we add a zero to the remainder making it 350, and continue the process.

Going ahead to step 12:
When dividing 350 by 89, we get 3 with a remainder of 83.
The next digit of our result is 3. 
Result so far: 608132.6853
Deduct 267 from 350 and we're left with 83.
Since there are no more digits in the dividend, we add a zero to the remainder making it 830, and continue the process.

Advancing to step 13:
89 goes into 830 9 times with a remainder of 29.
The next digit of our result is 9. 
Result so far: 608132.68539
If we subtract 801 from 830, 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.

Going ahead to step 14:
89 can be fit into 290 3 times, resulting in a remainder of 23.
The next digit of our result is 3. 
Result so far: 608132.685393
Deduct 267 from 290 and we're left with 23.
Since there are no more digits in the dividend, we add a zero to the remainder making it 230, and continue the process.

On to step 15:
If we divide 230 by 89, we get 2 and a remainder of 52.
The next digit of our result is 2. 
Result so far: 608132.6853932
If we take 178 away from 230, we end up with 52.
Since there are no more digits in the dividend, we add a zero to the remainder making it 520, and continue the process.

Going ahead to step 16:
When dividing 520 by 89, we get 5 with a remainder of 75.
The next digit of our result is 5. 
Result so far: 608132.68539325
Subtracting 445 from 520 leaves us with 75.
Since there are no more digits in the dividend, we add a zero to the remainder making it 750, and continue the process.

After the division, we end up with 608132.68539325 and a remainder of 7.5e-08.