1505991 divided by 129 
We want to divide 1505991 by 129.

Advancing to step 1:
The number 129 fits into 1 0 times, leaving a remainder of 1.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 1, we get 1.
Bring next digit (5) of the dividend behind the 1 and repeat the process: 15 / 129

Moving on to step 2:
When dividing 15 by 129, we get 0 with a remainder of 15.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 15 and we're left with 15.
Fetch the next digit (0) from the dividend, attach it to 15 and continue: 150 / 129

Going ahead to step 3:
129 goes into 150 1 times with a remainder of 21.
Write down 1 as next digit of the result. 
Result so far: 1.0
Deduct 129 from 150 and we're left with 21.
Append the next digit (5) from the dividend to 21 and continue with: 215 / 129

On to step 4:
If we divide 215 by 129, we get 1 and a remainder of 86.
The number 1 becomes the next digit in our result. 
Result so far: 11.0
If we subtract 129 from 215, we get 86.
Take the next digit (9) from the dividend and append it to 86, then repeat: 869 / 129

Step 5:
129 goes into 869 6 times with a remainder of 95.
Use 6 as the next digit of our solution. 
Result so far: 116.0
If we take 774 away from 869, we end up with 95.
Fetch the next digit (9) from the dividend, attach it to 95 and continue: 959 / 129

Let's proceed to step 6:
When dividing 959 by 129, we get 7 with a remainder of 56.
Put 7 as the next digit of the answer. 
Result so far: 1167.0
The remainder is 56 after subtracting 903 from 959.
Append the next digit (1) from the dividend to 56 and continue with: 561 / 129

Moving on to step 7:
129 goes into 561 4 times with a remainder of 45.
The next digit of our result is 4. 
Result so far: 11674.0
Deduct 516 from 561 and we're left with 45.
Since there are no more digits in the dividend, we add a zero to the remainder making it 450, and continue the process.

Advancing to step 8:
450 divided by 129 is 3 with a remainder of 63.
The number 3 becomes the next digit in our result. 
Result so far: 11674.3
If we subtract 387 from 450, we get 63.
Since there are no more digits in the dividend, we add a zero to the remainder making it 630, and continue the process.

On to step 9:
When dividing 630 by 129, we get 4 with a remainder of 114.
The next digit of our result is 4. 
Result so far: 11674.34
The remainder is 114 after subtracting 516 from 630.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1140, and continue the process.

Going ahead to step 10:
129 can be fit into 1140 8 times, resulting in a remainder of 108.
Write down 8 as next digit of the result. 
Result so far: 11674.348
If we subtract 1032 from 1140, we get 108.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1080, and continue the process.

Going ahead to step 11:
If we divide 1080 by 129, we get 8 and a remainder of 48.
The next digit of our result is 8. 
Result so far: 11674.3488
If we take 1032 away from 1080, we end up with 48.
Since there are no more digits in the dividend, we add a zero to the remainder making it 480, and continue the process.

Our division results in 11674.3488 with a remaining 0.00048.