We look at the division of 57098503 by 645 
We want to figure out the number of times 57098503 can be divided by 645.

Let's proceed to step 1:
When dividing 5 by 645, we get 0 with a remainder of 5.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 5 and we're left with 5.
Take the next digit (7) from the dividend and append it to 5, then repeat: 57 / 645

Going ahead to step 2:
The number 645 fits into 57 0 times, leaving a remainder of 57.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 57 leaves us with 57.
Grab the next digit (0) from the dividend, add it to 57, then carry on: 570 / 645

On to step 3:
When dividing 570 by 645, we get 0 with a remainder of 570.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 570, we get 570.
Include the next digit (9) from the dividend after 570, then repeat: 5709 / 645

Step 4:
If we divide 5709 by 645, we get 8 and a remainder of 549.
Write down 8 as next digit of the result. 
Result so far: 8.0
Subtracting 5160 from 5709 leaves us with 549.
Append the next digit (8) from the dividend to 549 and continue with: 5498 / 645

Step 5:
The number 645 fits into 5498 8 times, leaving a remainder of 338.
Put 8 as the next digit of the answer. 
Result so far: 88.0
Subtracting 5160 from 5498 leaves us with 338.
Fetch the next digit (5) from the dividend, attach it to 338 and continue: 3385 / 645

Step 6:
If we divide 3385 by 645, we get 5 and a remainder of 160.
Use 5 as the next digit of our solution. 
Result so far: 885.0
The remainder is 160 after subtracting 3225 from 3385.
Fetch the next digit (0) from the dividend, attach it to 160 and continue: 1600 / 645

Step 7:
When dividing 1600 by 645, we get 2 with a remainder of 310.
Record the quotient 2 as the next digit in the result. 
Result so far: 8852.0
If we subtract 1290 from 1600, we get 310.
Bring next digit (3) of the dividend behind the 310 and repeat the process: 3103 / 645

Let's proceed to step 8:
The number 645 fits into 3103 4 times, leaving a remainder of 523.
Put 4 as the next digit of the answer. 
Result so far: 88524.0
Deduct 2580 from 3103 and we're left with 523.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5230, and continue the process.

Going ahead to step 9:
5230 divided by 645 is 8 with a remainder of 70.
Record the quotient 8 as the next digit in the result. 
Result so far: 88524.8
If we subtract 5160 from 5230, we get 70.
Since there are no more digits in the dividend, we add a zero to the remainder making it 700, and continue the process.

Step 10:
The number 645 fits into 700 1 times, leaving a remainder of 55.
The number 1 becomes the next digit in our result. 
Result so far: 88524.81
Subtracting 645 from 700 leaves us with 55.
Since there are no more digits in the dividend, we add a zero to the remainder making it 550, and continue the process.

Step 11:
If we divide 550 by 645, we get 0 and a remainder of 550.
The next digit of our result is 0. 
Result so far: 88524.81
The remainder is 550 after subtracting 0 from 550.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5500, and continue the process.

Moving on to step 12:
645 goes into 5500 8 times with a remainder of 340.
Write down 8 as next digit of the result. 
Result so far: 88524.8108
If we subtract 5160 from 5500, we get 340.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3400, and continue the process.

Advancing to step 13:
645 can be fit into 3400 5 times, resulting in a remainder of 175.
Use 5 as the next digit of our solution. 
Result so far: 88524.81085
Deduct 3225 from 3400 and we're left with 175.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1750, and continue the process.

Step 14:
The number 645 fits into 1750 2 times, leaving a remainder of 460.
Put 2 as the next digit of the answer. 
Result so far: 88524.810852
Subtract 1290 from 1750 to get 460.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4600, and continue the process.

Moving on to step 15:
4600 divided by 645 is 7 with a remainder of 85.
Use 7 as the next digit of our solution. 
Result so far: 88524.8108527
Subtract 4515 from 4600 to get 85.
Since there are no more digits in the dividend, we add a zero to the remainder making it 850, and continue the process.

Step 16:
If we divide 850 by 645, we get 1 and a remainder of 205.
The number 1 becomes the next digit in our result. 
Result so far: 88524.81085271
Subtract 645 from 850 to get 205.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2050, and continue the process.

In conclusion, the division gives 88524.81085271 with a balance of 2.05e-07.