9991049 ÷ 784 
We want to divide 9991049 by 784.

Advancing to step 1:
9 divided by 784 is 0 with a remainder of 9.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 9 and we're left with 9.
Grab the next digit (9) from the dividend, add it to 9, then carry on: 99 / 784

Advancing to step 2:
784 goes into 99 0 times with a remainder of 99.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 99 to get 99.
Append the next digit (9) from the dividend to 99 and continue with: 999 / 784

Advancing to step 3:
The number 784 fits into 999 1 times, leaving a remainder of 215.
Write down 1 as next digit of the result. 
Result so far: 1.0
Deduct 784 from 999 and we're left with 215.
Grab the next digit (1) from the dividend, add it to 215, then carry on: 2151 / 784

On to step 4:
784 can be fit into 2151 2 times, resulting in a remainder of 583.
The next digit of our result is 2. 
Result so far: 12.0
Deduct 1568 from 2151 and we're left with 583.
Fetch the next digit (0) from the dividend, attach it to 583 and continue: 5830 / 784

Moving on to step 5:
If we divide 5830 by 784, we get 7 and a remainder of 342.
Put 7 as the next digit of the answer. 
Result so far: 127.0
If we take 5488 away from 5830, we end up with 342.
Fetch the next digit (4) from the dividend, attach it to 342 and continue: 3424 / 784

On to step 6:
When dividing 3424 by 784, we get 4 with a remainder of 288.
Use 4 as the next digit of our solution. 
Result so far: 1274.0
Subtract 3136 from 3424 to get 288.
Grab the next digit (9) from the dividend, add it to 288, then carry on: 2889 / 784

Moving on to step 7:
When dividing 2889 by 784, we get 3 with a remainder of 537.
Write down 3 as next digit of the result. 
Result so far: 12743.0
The remainder is 537 after subtracting 2352 from 2889.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5370, and continue the process.

Step 8:
When dividing 5370 by 784, we get 6 with a remainder of 666.
Put 6 as the next digit of the answer. 
Result so far: 12743.6
Subtracting 4704 from 5370 leaves us with 666.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6660, and continue the process.

Going ahead to step 9:
If we divide 6660 by 784, we get 8 and a remainder of 388.
The next digit of our result is 8. 
Result so far: 12743.68
If we take 6272 away from 6660, we end up with 388.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3880, and continue the process.

Step 10:
3880 divided by 784 is 4 with a remainder of 744.
Put 4 as the next digit of the answer. 
Result so far: 12743.684
If we subtract 3136 from 3880, we get 744.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7440, and continue the process.

Moving on to step 11:
If we divide 7440 by 784, we get 9 and a remainder of 384.
The next digit of our result is 9. 
Result so far: 12743.6849
If we take 7056 away from 7440, we end up with 384.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3840, and continue the process.

Step 12:
784 can be fit into 3840 4 times, resulting in a remainder of 704.
Record the quotient 4 as the next digit in the result. 
Result so far: 12743.68494
The remainder is 704 after subtracting 3136 from 3840.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7040, and continue the process.

Let's proceed to step 13:
When dividing 7040 by 784, we get 8 with a remainder of 768.
The next digit of our result is 8. 
Result so far: 12743.684948
The remainder is 768 after subtracting 6272 from 7040.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7680, and continue the process.

Moving on to step 14:
784 can be fit into 7680 9 times, resulting in a remainder of 624.
Record the quotient 9 as the next digit in the result. 
Result so far: 12743.6849489
Subtracting 7056 from 7680 leaves us with 624.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6240, and continue the process.

On to step 15:
784 goes into 6240 7 times with a remainder of 752.
Use 7 as the next digit of our solution. 
Result so far: 12743.68494897
If we subtract 5488 from 6240, we get 752.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7520, and continue the process.

The final outcome is 12743.68494897, with a leftover of 7.52e-07.