We look at the division of 78051980 by 738 
The aim is to understand the frequency of 738 in 78051980.

Step 1:
7 divided by 738 is 0 with a remainder of 7.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 7 leaves us with 7.
Include the next digit (8) from the dividend after 7, then repeat: 78 / 738

Moving on to step 2:
78 divided by 738 is 0 with a remainder of 78.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
The remainder is 78 after subtracting 0 from 78.
Bring next digit (0) of the dividend behind the 78 and repeat the process: 780 / 738

Moving on to step 3:
If we divide 780 by 738, we get 1 and a remainder of 42.
Use 1 as the next digit of our solution. 
Result so far: 1.0
Subtract 738 from 780 to get 42.
Append the next digit (5) from the dividend to 42 and continue with: 425 / 738

Step 4:
The number 738 fits into 425 0 times, leaving a remainder of 425.
The next digit of our result is 0. 
Result so far: 10.0
Subtracting 0 from 425 leaves us with 425.
Take the next digit (1) from the dividend and append it to 425, then repeat: 4251 / 738

Going ahead to step 5:
When dividing 4251 by 738, we get 5 with a remainder of 561.
Write down 5 as next digit of the result. 
Result so far: 105.0
Subtracting 3690 from 4251 leaves us with 561.
Grab the next digit (9) from the dividend, add it to 561, then carry on: 5619 / 738

Going ahead to step 6:
When dividing 5619 by 738, we get 7 with a remainder of 453.
Write down 7 as next digit of the result. 
Result so far: 1057.0
Deduct 5166 from 5619 and we're left with 453.
Grab the next digit (8) from the dividend, add it to 453, then carry on: 4538 / 738

Advancing to step 7:
4538 divided by 738 is 6 with a remainder of 110.
Put 6 as the next digit of the answer. 
Result so far: 10576.0
The remainder is 110 after subtracting 4428 from 4538.
Include the next digit (0) from the dividend after 110, then repeat: 1100 / 738

Step 8:
738 can be fit into 1100 1 times, resulting in a remainder of 362.
Put 1 as the next digit of the answer. 
Result so far: 105761.0
If we subtract 738 from 1100, we get 362.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3620, and continue the process.

Going ahead to step 9:
When dividing 3620 by 738, we get 4 with a remainder of 668.
Write down 4 as next digit of the result. 
Result so far: 105761.4
The remainder is 668 after subtracting 2952 from 3620.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6680, and continue the process.

Going ahead to step 10:
When dividing 6680 by 738, we get 9 with a remainder of 38.
The number 9 becomes the next digit in our result. 
Result so far: 105761.49
Deduct 6642 from 6680 and we're left with 38.
Since there are no more digits in the dividend, we add a zero to the remainder making it 380, and continue the process.

On to step 11:
738 goes into 380 0 times with a remainder of 380.
Put 0 as the next digit of the answer. 
Result so far: 105761.49
Subtract 0 from 380 to get 380.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3800, and continue the process.

Step 12:
3800 divided by 738 is 5 with a remainder of 110.
The number 5 becomes the next digit in our result. 
Result so far: 105761.4905
Subtracting 3690 from 3800 leaves us with 110.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1100, and continue the process.

Step 13:
When dividing 1100 by 738, we get 1 with a remainder of 362.
The number 1 becomes the next digit in our result. 
Result so far: 105761.49051
If we take 738 away from 1100, we end up with 362.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3620, and continue the process.

Going ahead to step 14:
738 can be fit into 3620 4 times, resulting in a remainder of 668.
Record the quotient 4 as the next digit in the result. 
Result so far: 105761.490514
If we take 2952 away from 3620, we end up with 668.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6680, and continue the process.

Step 15:
When dividing 6680 by 738, we get 9 with a remainder of 38.
Put 9 as the next digit of the answer. 
Result so far: 105761.4905149
Subtract 6642 from 6680 to get 38.
Since there are no more digits in the dividend, we add a zero to the remainder making it 380, and continue the process.

Going ahead to step 16:
When dividing 380 by 738, we get 0 with a remainder of 380.
The next digit of our result is 0. 
Result so far: 105761.4905149
Deduct 0 from 380 and we're left with 380.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3800, and continue the process.

The final result is 105761.4905149 with a remainder of 3.8e-07.