17159960 ÷ 451 
We want to divide 17159960 by 451.

Advancing to step 1:
When dividing 1 by 451, we get 0 with a remainder of 1.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 1, we get 1.
Append the next digit (7) from the dividend to 1 and continue with: 17 / 451

Going ahead to step 2:
If we divide 17 by 451, we get 0 and a remainder of 17.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 17 and we're left with 17.
Fetch the next digit (1) from the dividend, attach it to 17 and continue: 171 / 451

Step 3:
If we divide 171 by 451, we get 0 and a remainder of 171.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 171, we get 171.
Append the next digit (5) from the dividend to 171 and continue with: 1715 / 451

Step 4:
451 goes into 1715 3 times with a remainder of 362.
Write down 3 as next digit of the result. 
Result so far: 3.0
Subtract 1353 from 1715 to get 362.
Include the next digit (9) from the dividend after 362, then repeat: 3629 / 451

Let's proceed to step 5:
3629 divided by 451 is 8 with a remainder of 21.
Record the quotient 8 as the next digit in the result. 
Result so far: 38.0
Subtracting 3608 from 3629 leaves us with 21.
Grab the next digit (9) from the dividend, add it to 21, then carry on: 219 / 451

Step 6:
When dividing 219 by 451, we get 0 with a remainder of 219.
Use 0 as the next digit of our solution. 
Result so far: 380.0
The remainder is 219 after subtracting 0 from 219.
Bring next digit (6) of the dividend behind the 219 and repeat the process: 2196 / 451

Moving on to step 7:
If we divide 2196 by 451, we get 4 and a remainder of 392.
Use 4 as the next digit of our solution. 
Result so far: 3804.0
Deduct 1804 from 2196 and we're left with 392.
Append the next digit (0) from the dividend to 392 and continue with: 3920 / 451

Going ahead to step 8:
The number 451 fits into 3920 8 times, leaving a remainder of 312.
Use 8 as the next digit of our solution. 
Result so far: 38048.0
The remainder is 312 after subtracting 3608 from 3920.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3120, and continue the process.

On to step 9:
451 can be fit into 3120 6 times, resulting in a remainder of 414.
The next digit of our result is 6. 
Result so far: 38048.6
Subtracting 2706 from 3120 leaves us with 414.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4140, and continue the process.

Step 10:
If we divide 4140 by 451, we get 9 and a remainder of 81.
Use 9 as the next digit of our solution. 
Result so far: 38048.69
Subtracting 4059 from 4140 leaves us with 81.
Since there are no more digits in the dividend, we add a zero to the remainder making it 810, and continue the process.

Going ahead to step 11:
451 can be fit into 810 1 times, resulting in a remainder of 359.
Put 1 as the next digit of the answer. 
Result so far: 38048.691
If we take 451 away from 810, we end up with 359.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3590, and continue the process.

Moving on to step 12:
451 goes into 3590 7 times with a remainder of 433.
Use 7 as the next digit of our solution. 
Result so far: 38048.6917
Subtracting 3157 from 3590 leaves us with 433.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4330, and continue the process.

Step 13:
If we divide 4330 by 451, we get 9 and a remainder of 271.
Write down 9 as next digit of the result. 
Result so far: 38048.69179
If we subtract 4059 from 4330, we get 271.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2710, and continue the process.

Let's proceed to step 14:
If we divide 2710 by 451, we get 6 and a remainder of 4.
The number 6 becomes the next digit in our result. 
Result so far: 38048.691796
The remainder is 4 after subtracting 2706 from 2710.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

On to step 15:
40 divided by 451 is 0 with a remainder of 40.
Use 0 as the next digit of our solution. 
Result so far: 38048.691796
If we subtract 0 from 40, we get 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Going ahead to step 16:
400 divided by 451 is 0 with a remainder of 400.
Use 0 as the next digit of our solution. 
Result so far: 38048.691796
Subtracting 0 from 400 leaves us with 400.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4000, and continue the process.

The final outcome is 38048.691796, with a leftover of 4e-07.