3091899 ÷ 784 
We're looking to find how many times 784 goes into 3091899.

Step 1:
When dividing 3 by 784, we get 0 with a remainder of 3.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 3, we get 3.
Fetch the next digit (0) from the dividend, attach it to 3 and continue: 30 / 784

On to step 2:
When dividing 30 by 784, we get 0 with a remainder of 30.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 30 leaves us with 30.
Grab the next digit (9) from the dividend, add it to 30, then carry on: 309 / 784

Going ahead to step 3:
784 can be fit into 309 0 times, resulting in a remainder of 309.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 309 leaves us with 309.
Bring next digit (1) of the dividend behind the 309 and repeat the process: 3091 / 784

Let's proceed to step 4:
3091 divided by 784 is 3 with a remainder of 739.
Put 3 as the next digit of the answer. 
Result so far: 3.0
Deduct 2352 from 3091 and we're left with 739.
Include the next digit (8) from the dividend after 739, then repeat: 7398 / 784

Moving on to step 5:
784 goes into 7398 9 times with a remainder of 342.
Put 9 as the next digit of the answer. 
Result so far: 39.0
The remainder is 342 after subtracting 7056 from 7398.
Fetch the next digit (9) from the dividend, attach it to 342 and continue: 3429 / 784

Step 6:
When dividing 3429 by 784, we get 4 with a remainder of 293.
Write down 4 as next digit of the result. 
Result so far: 394.0
If we take 3136 away from 3429, we end up with 293.
Take the next digit (9) from the dividend and append it to 293, then repeat: 2939 / 784

Step 7:
The number 784 fits into 2939 3 times, leaving a remainder of 587.
Put 3 as the next digit of the answer. 
Result so far: 3943.0
The remainder is 587 after subtracting 2352 from 2939.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5870, and continue the process.

Moving on to step 8:
The number 784 fits into 5870 7 times, leaving a remainder of 382.
Use 7 as the next digit of our solution. 
Result so far: 3943.7
If we subtract 5488 from 5870, we get 382.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3820, and continue the process.

Advancing to step 9:
The number 784 fits into 3820 4 times, leaving a remainder of 684.
Write down 4 as next digit of the result. 
Result so far: 3943.74
Deduct 3136 from 3820 and we're left with 684.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6840, and continue the process.

Step 10:
When dividing 6840 by 784, we get 8 with a remainder of 568.
The number 8 becomes the next digit in our result. 
Result so far: 3943.748
If we take 6272 away from 6840, we end up with 568.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5680, and continue the process.

Let's proceed to step 11:
When dividing 5680 by 784, we get 7 with a remainder of 192.
The next digit of our result is 7. 
Result so far: 3943.7487
If we take 5488 away from 5680, we end up with 192.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1920, and continue the process.

Step 12:
The number 784 fits into 1920 2 times, leaving a remainder of 352.
The number 2 becomes the next digit in our result. 
Result so far: 3943.74872
If we take 1568 away from 1920, we end up with 352.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3520, and continue the process.

Moving on to step 13:
When dividing 3520 by 784, we get 4 with a remainder of 384.
The next digit of our result is 4. 
Result so far: 3943.748724
Subtract 3136 from 3520 to get 384.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3840, and continue the process.

Moving on to step 14:
784 can be fit into 3840 4 times, resulting in a remainder of 704.
Write down 4 as next digit of the result. 
Result so far: 3943.7487244
Subtracting 3136 from 3840 leaves us with 704.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7040, and continue the process.

The final result is 3943.7487244 with a remainder of 7.04e-06.