We're dividing 39937860 by 783 
The aim is to understand the frequency of 783 in 39937860.

Step 1:
783 can be fit into 3 0 times, resulting in a remainder of 3.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtracting 0 from 3 leaves us with 3.
Take the next digit (9) from the dividend and append it to 3, then repeat: 39 / 783

Going ahead to step 2:
The number 783 fits into 39 0 times, leaving a remainder of 39.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 39, we end up with 39.
Append the next digit (9) from the dividend to 39 and continue with: 399 / 783

Moving on to step 3:
When dividing 399 by 783, we get 0 with a remainder of 399.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 399, we end up with 399.
Include the next digit (3) from the dividend after 399, then repeat: 3993 / 783

Moving on to step 4:
3993 divided by 783 is 5 with a remainder of 78.
The next digit of our result is 5. 
Result so far: 5.0
The remainder is 78 after subtracting 3915 from 3993.
Append the next digit (7) from the dividend to 78 and continue with: 787 / 783

Step 5:
783 can be fit into 787 1 times, resulting in a remainder of 4.
Put 1 as the next digit of the answer. 
Result so far: 51.0
Deduct 783 from 787 and we're left with 4.
Grab the next digit (8) from the dividend, add it to 4, then carry on: 48 / 783

Moving on to step 6:
If we divide 48 by 783, we get 0 and a remainder of 48.
The number 0 becomes the next digit in our result. 
Result so far: 510.0
Subtracting 0 from 48 leaves us with 48.
Take the next digit (6) from the dividend and append it to 48, then repeat: 486 / 783

Step 7:
When dividing 486 by 783, we get 0 with a remainder of 486.
Record the quotient 0 as the next digit in the result. 
Result so far: 5100.0
Subtract 0 from 486 to get 486.
Grab the next digit (0) from the dividend, add it to 486, then carry on: 4860 / 783

Moving on to step 8:
If we divide 4860 by 783, we get 6 and a remainder of 162.
Use 6 as the next digit of our solution. 
Result so far: 51006.0
Subtract 4698 from 4860 to get 162.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1620, and continue the process.

Going ahead to step 9:
The number 783 fits into 1620 2 times, leaving a remainder of 54.
The number 2 becomes the next digit in our result. 
Result so far: 51006.2
If we take 1566 away from 1620, we end up with 54.
Since there are no more digits in the dividend, we add a zero to the remainder making it 540, and continue the process.

Let's proceed to step 10:
540 divided by 783 is 0 with a remainder of 540.
Use 0 as the next digit of our solution. 
Result so far: 51006.2
Deduct 0 from 540 and we're left with 540.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5400, and continue the process.

Moving on to step 11:
When dividing 5400 by 783, we get 6 with a remainder of 702.
Use 6 as the next digit of our solution. 
Result so far: 51006.206
The remainder is 702 after subtracting 4698 from 5400.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7020, and continue the process.

Let's proceed to step 12:
783 goes into 7020 8 times with a remainder of 756.
Record the quotient 8 as the next digit in the result. 
Result so far: 51006.2068
Subtracting 6264 from 7020 leaves us with 756.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7560, and continue the process.

Let's proceed to step 13:
When dividing 7560 by 783, we get 9 with a remainder of 513.
Record the quotient 9 as the next digit in the result. 
Result so far: 51006.20689
Subtract 7047 from 7560 to get 513.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5130, and continue the process.

Let's proceed to step 14:
783 can be fit into 5130 6 times, resulting in a remainder of 432.
The number 6 becomes the next digit in our result. 
Result so far: 51006.206896
Deduct 4698 from 5130 and we're left with 432.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4320, and continue the process.

Advancing to step 15:
783 goes into 4320 5 times with a remainder of 405.
The next digit of our result is 5. 
Result so far: 51006.2068965
If we subtract 3915 from 4320, we get 405.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4050, and continue the process.

Step 16:
If we divide 4050 by 783, we get 5 and a remainder of 135.
The number 5 becomes the next digit in our result. 
Result so far: 51006.20689655
The remainder is 135 after subtracting 3915 from 4050.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1350, and continue the process.

The quotient of the division is 51006.20689655, and the remainder is 1.35e-07.