10515643 ÷ 783 
The aim is to understand the frequency of 783 in 10515643.

Step 1:
If we divide 1 by 783, we get 0 and a remainder of 1.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtract 0 from 1 to get 1.
Take the next digit (0) from the dividend and append it to 1, then repeat: 10 / 783

On to step 2:
When dividing 10 by 783, we get 0 with a remainder of 10.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 10 to get 10.
Grab the next digit (5) from the dividend, add it to 10, then carry on: 105 / 783

Step 3:
If we divide 105 by 783, we get 0 and a remainder of 105.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 105, we get 105.
Bring next digit (1) of the dividend behind the 105 and repeat the process: 1051 / 783

Moving on to step 4:
783 goes into 1051 1 times with a remainder of 268.
The next digit of our result is 1. 
Result so far: 1.0
Deduct 783 from 1051 and we're left with 268.
Append the next digit (5) from the dividend to 268 and continue with: 2685 / 783

Step 5:
2685 divided by 783 is 3 with a remainder of 336.
Write down 3 as next digit of the result. 
Result so far: 13.0
The remainder is 336 after subtracting 2349 from 2685.
Grab the next digit (6) from the dividend, add it to 336, then carry on: 3366 / 783

Let's proceed to step 6:
If we divide 3366 by 783, we get 4 and a remainder of 234.
Use 4 as the next digit of our solution. 
Result so far: 134.0
Subtracting 3132 from 3366 leaves us with 234.
Take the next digit (4) from the dividend and append it to 234, then repeat: 2344 / 783

Step 7:
783 goes into 2344 2 times with a remainder of 778.
Use 2 as the next digit of our solution. 
Result so far: 1342.0
Deduct 1566 from 2344 and we're left with 778.
Fetch the next digit (3) from the dividend, attach it to 778 and continue: 7783 / 783

Let's proceed to step 8:
The number 783 fits into 7783 9 times, leaving a remainder of 736.
The number 9 becomes the next digit in our result. 
Result so far: 13429.0
Subtracting 7047 from 7783 leaves us with 736.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7360, and continue the process.

Step 9:
When dividing 7360 by 783, we get 9 with a remainder of 313.
The next digit of our result is 9. 
Result so far: 13429.9
Subtracting 7047 from 7360 leaves us with 313.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3130, and continue the process.

Advancing to step 10:
If we divide 3130 by 783, we get 3 and a remainder of 781.
The next digit of our result is 3. 
Result so far: 13429.93
Subtract 2349 from 3130 to get 781.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7810, and continue the process.

On to step 11:
783 can be fit into 7810 9 times, resulting in a remainder of 763.
Put 9 as the next digit of the answer. 
Result so far: 13429.939
The remainder is 763 after subtracting 7047 from 7810.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7630, and continue the process.

Let's proceed to step 12:
The number 783 fits into 7630 9 times, leaving a remainder of 583.
The next digit of our result is 9. 
Result so far: 13429.9399
Deduct 7047 from 7630 and we're left with 583.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5830, and continue the process.

The quotient of the division is 13429.9399, and the remainder is 0.00583.