Let's divide 17402560 by 645
Our goal is to divide 17402560 by 645.

Advancing to step 1:
1 divided by 645 is 0 with a remainder of 1.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtracting 0 from 1 leaves us with 1.
Append the next digit (7) from the dividend to 1 and continue with: 17 / 645

Advancing to step 2:
When dividing 17 by 645, we get 0 with a remainder of 17.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 17, we end up with 17.
Grab the next digit (4) from the dividend, add it to 17, then carry on: 174 / 645

Advancing to step 3:
If we divide 174 by 645, we get 0 and a remainder of 174.
The next digit of our result is 0. 
Result so far: 0.0
The remainder is 174 after subtracting 0 from 174.
Grab the next digit (0) from the dividend, add it to 174, then carry on: 1740 / 645

Let's proceed to step 4:
When dividing 1740 by 645, we get 2 with a remainder of 450.
The number 2 becomes the next digit in our result. 
Result so far: 2.0
If we subtract 1290 from 1740, we get 450.
Take the next digit (2) from the dividend and append it to 450, then repeat: 4502 / 645

On to step 5:
645 goes into 4502 6 times with a remainder of 632.
Use 6 as the next digit of our solution. 
Result so far: 26.0
Deduct 3870 from 4502 and we're left with 632.
Append the next digit (5) from the dividend to 632 and continue with: 6325 / 645

Advancing to step 6:
645 goes into 6325 9 times with a remainder of 520.
Put 9 as the next digit of the answer. 
Result so far: 269.0
Subtract 5805 from 6325 to get 520.
Append the next digit (6) from the dividend to 520 and continue with: 5206 / 645

Step 7:
645 can be fit into 5206 8 times, resulting in a remainder of 46.
The next digit of our result is 8. 
Result so far: 2698.0
Subtract 5160 from 5206 to get 46.
Include the next digit (0) from the dividend after 46, then repeat: 460 / 645

Step 8:
460 divided by 645 is 0 with a remainder of 460.
The number 0 becomes the next digit in our result. 
Result so far: 26980.0
The remainder is 460 after subtracting 0 from 460.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4600, and continue the process.

Let's proceed to step 9:
4600 divided by 645 is 7 with a remainder of 85.
Record the quotient 7 as the next digit in the result. 
Result so far: 26980.7
Deduct 4515 from 4600 and we're left with 85.
Since there are no more digits in the dividend, we add a zero to the remainder making it 850, and continue the process.

Let's proceed to step 10:
If we divide 850 by 645, we get 1 and a remainder of 205.
Use 1 as the next digit of our solution. 
Result so far: 26980.71
If we take 645 away from 850, we end up with 205.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2050, and continue the process.

Advancing to step 11:
645 can be fit into 2050 3 times, resulting in a remainder of 115.
Use 3 as the next digit of our solution. 
Result so far: 26980.713
Subtracting 1935 from 2050 leaves us with 115.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1150, and continue the process.

Step 12:
645 can be fit into 1150 1 times, resulting in a remainder of 505.
The number 1 becomes the next digit in our result. 
Result so far: 26980.7131
Subtract 645 from 1150 to get 505.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5050, and continue the process.

Moving on to step 13:
The number 645 fits into 5050 7 times, leaving a remainder of 535.
Write down 7 as next digit of the result. 
Result so far: 26980.71317
Subtract 4515 from 5050 to get 535.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5350, and continue the process.

Moving on to step 14:
When dividing 5350 by 645, we get 8 with a remainder of 190.
The next digit of our result is 8. 
Result so far: 26980.713178
Subtract 5160 from 5350 to get 190.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1900, and continue the process.

Going ahead to step 15:
When dividing 1900 by 645, we get 2 with a remainder of 610.
The number 2 becomes the next digit in our result. 
Result so far: 26980.7131782
Deduct 1290 from 1900 and we're left with 610.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6100, and continue the process.

Step 16:
645 can be fit into 6100 9 times, resulting in a remainder of 295.
The number 9 becomes the next digit in our result. 
Result so far: 26980.71317829
Subtracting 5805 from 6100 leaves us with 295.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2950, and continue the process.

In conclusion, the division gives 26980.71317829 with a balance of 2.95e-07.