We're dividing 89507828 by 645 
Our goal is to divide 89507828 by 645.

Let's proceed to step 1:
645 goes into 8 0 times with a remainder of 8.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 8 and we're left with 8.
Include the next digit (9) from the dividend after 8, then repeat: 89 / 645

On to step 2:
If we divide 89 by 645, we get 0 and a remainder of 89.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 89 and we're left with 89.
Take the next digit (5) from the dividend and append it to 89, then repeat: 895 / 645

On to step 3:
645 can be fit into 895 1 times, resulting in a remainder of 250.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
If we take 645 away from 895, we end up with 250.
Include the next digit (0) from the dividend after 250, then repeat: 2500 / 645

Advancing to step 4:
The number 645 fits into 2500 3 times, leaving a remainder of 565.
The number 3 becomes the next digit in our result. 
Result so far: 13.0
If we subtract 1935 from 2500, we get 565.
Include the next digit (7) from the dividend after 565, then repeat: 5657 / 645

Advancing to step 5:
645 can be fit into 5657 8 times, resulting in a remainder of 497.
Use 8 as the next digit of our solution. 
Result so far: 138.0
Subtract 5160 from 5657 to get 497.
Include the next digit (8) from the dividend after 497, then repeat: 4978 / 645

Step 6:
The number 645 fits into 4978 7 times, leaving a remainder of 463.
Write down 7 as next digit of the result. 
Result so far: 1387.0
Subtract 4515 from 4978 to get 463.
Grab the next digit (2) from the dividend, add it to 463, then carry on: 4632 / 645

On to step 7:
When dividing 4632 by 645, we get 7 with a remainder of 117.
The number 7 becomes the next digit in our result. 
Result so far: 13877.0
The remainder is 117 after subtracting 4515 from 4632.
Append the next digit (8) from the dividend to 117 and continue with: 1178 / 645

Let's proceed to step 8:
645 goes into 1178 1 times with a remainder of 533.
Use 1 as the next digit of our solution. 
Result so far: 138771.0
If we subtract 645 from 1178, we get 533.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5330, and continue the process.

On to step 9:
When dividing 5330 by 645, we get 8 with a remainder of 170.
The next digit of our result is 8. 
Result so far: 138771.8
Subtract 5160 from 5330 to get 170.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1700, and continue the process.

Let's proceed to step 10:
If we divide 1700 by 645, we get 2 and a remainder of 410.
Use 2 as the next digit of our solution. 
Result so far: 138771.82
If we take 1290 away from 1700, we end up with 410.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4100, and continue the process.

Moving on to step 11:
The number 645 fits into 4100 6 times, leaving a remainder of 230.
Put 6 as the next digit of the answer. 
Result so far: 138771.826
If we subtract 3870 from 4100, we get 230.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2300, and continue the process.

Step 12:
The number 645 fits into 2300 3 times, leaving a remainder of 365.
Put 3 as the next digit of the answer. 
Result so far: 138771.8263
Subtract 1935 from 2300 to get 365.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3650, and continue the process.

Let's proceed to step 13:
3650 divided by 645 is 5 with a remainder of 425.
The number 5 becomes the next digit in our result. 
Result so far: 138771.82635
Subtract 3225 from 3650 to get 425.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4250, and continue the process.

On to step 14:
If we divide 4250 by 645, we get 6 and a remainder of 380.
Record the quotient 6 as the next digit in the result. 
Result so far: 138771.826356
Deduct 3870 from 4250 and we're left with 380.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3800, and continue the process.

On to step 15:
The number 645 fits into 3800 5 times, leaving a remainder of 575.
Use 5 as the next digit of our solution. 
Result so far: 138771.8263565
If we subtract 3225 from 3800, we get 575.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5750, and continue the process.

Moving on to step 16:
645 can be fit into 5750 8 times, resulting in a remainder of 590.
Put 8 as the next digit of the answer. 
Result so far: 138771.82635658
If we take 5160 away from 5750, we end up with 590.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5900, and continue the process.

The quotient of the division is 138771.82635658, and the remainder is 5.9e-07.