We divide 42686640 by 784
The aim is to understand the frequency of 784 in 42686640.

Step 1:
4 divided by 784 is 0 with a remainder of 4.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 4 leaves us with 4.
Append the next digit (2) from the dividend to 4 and continue with: 42 / 784

Moving on to step 2:
If we divide 42 by 784, we get 0 and a remainder of 42.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 42 and we're left with 42.
Append the next digit (6) from the dividend to 42 and continue with: 426 / 784

Going ahead to step 3:
The number 784 fits into 426 0 times, leaving a remainder of 426.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 426 and we're left with 426.
Append the next digit (8) from the dividend to 426 and continue with: 4268 / 784

Moving on to step 4:
The number 784 fits into 4268 5 times, leaving a remainder of 348.
Record the quotient 5 as the next digit in the result. 
Result so far: 5.0
Deduct 3920 from 4268 and we're left with 348.
Bring next digit (6) of the dividend behind the 348 and repeat the process: 3486 / 784

Moving on to step 5:
The number 784 fits into 3486 4 times, leaving a remainder of 350.
Put 4 as the next digit of the answer. 
Result so far: 54.0
Deduct 3136 from 3486 and we're left with 350.
Include the next digit (6) from the dividend after 350, then repeat: 3506 / 784

On to step 6:
If we divide 3506 by 784, we get 4 and a remainder of 370.
The number 4 becomes the next digit in our result. 
Result so far: 544.0
If we take 3136 away from 3506, we end up with 370.
Grab the next digit (4) from the dividend, add it to 370, then carry on: 3704 / 784

Advancing to step 7:
When dividing 3704 by 784, we get 4 with a remainder of 568.
Write down 4 as next digit of the result. 
Result so far: 5444.0
Subtracting 3136 from 3704 leaves us with 568.
Include the next digit (0) from the dividend after 568, then repeat: 5680 / 784

On to step 8:
5680 divided by 784 is 7 with a remainder of 192.
The number 7 becomes the next digit in our result. 
Result so far: 54447.0
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 9:
If we divide 1920 by 784, we get 2 and a remainder of 352.
Use 2 as the next digit of our solution. 
Result so far: 54447.2
Deduct 1568 from 1920 and we're left 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.

Going ahead to step 10:
3520 divided by 784 is 4 with a remainder of 384.
Use 4 as the next digit of our solution. 
Result so far: 54447.24
The remainder is 384 after subtracting 3136 from 3520.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3840, and continue the process.

Advancing to step 11:
784 can be fit into 3840 4 times, resulting in a remainder of 704.
The number 4 becomes the next digit in our result. 
Result so far: 54447.244
Subtract 3136 from 3840 to get 704.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7040, and continue the process.

Our division results in 54447.244 with a remaining 0.0704.