78493374 ÷ 506 
The aim is to understand the frequency of 506 in 78493374.

Going ahead to step 1:
506 can be fit into 7 0 times, resulting in a remainder of 7.
Use 0 as the next digit of our solution. 
Result so far: 0.0
The remainder is 7 after subtracting 0 from 7.
Take the next digit (8) from the dividend and append it to 7, then repeat: 78 / 506

On to step 2:
78 divided by 506 is 0 with a remainder of 78.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 78, we get 78.
Take the next digit (4) from the dividend and append it to 78, then repeat: 784 / 506

Let's proceed to step 3:
506 goes into 784 1 times with a remainder of 278.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
The remainder is 278 after subtracting 506 from 784.
Grab the next digit (9) from the dividend, add it to 278, then carry on: 2789 / 506

Going ahead to step 4:
When dividing 2789 by 506, we get 5 with a remainder of 259.
The next digit of our result is 5. 
Result so far: 15.0
If we take 2530 away from 2789, we end up with 259.
Bring next digit (3) of the dividend behind the 259 and repeat the process: 2593 / 506

Moving on to step 5:
When dividing 2593 by 506, we get 5 with a remainder of 63.
Record the quotient 5 as the next digit in the result. 
Result so far: 155.0
Subtracting 2530 from 2593 leaves us with 63.
Append the next digit (3) from the dividend to 63 and continue with: 633 / 506

Step 6:
506 can be fit into 633 1 times, resulting in a remainder of 127.
Record the quotient 1 as the next digit in the result. 
Result so far: 1551.0
If we take 506 away from 633, we end up with 127.
Grab the next digit (7) from the dividend, add it to 127, then carry on: 1277 / 506

Advancing to step 7:
The number 506 fits into 1277 2 times, leaving a remainder of 265.
Use 2 as the next digit of our solution. 
Result so far: 15512.0
If we take 1012 away from 1277, we end up with 265.
Include the next digit (4) from the dividend after 265, then repeat: 2654 / 506

Step 8:
If we divide 2654 by 506, we get 5 and a remainder of 124.
The next digit of our result is 5. 
Result so far: 155125.0
Deduct 2530 from 2654 and we're left with 124.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1240, and continue the process.

Advancing to step 9:
The number 506 fits into 1240 2 times, leaving a remainder of 228.
Use 2 as the next digit of our solution. 
Result so far: 155125.2
The remainder is 228 after subtracting 1012 from 1240.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2280, and continue the process.

On to step 10:
When dividing 2280 by 506, we get 4 with a remainder of 256.
Use 4 as the next digit of our solution. 
Result so far: 155125.24
Subtracting 2024 from 2280 leaves us with 256.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2560, and continue the process.

Advancing to step 11:
506 goes into 2560 5 times with a remainder of 30.
Record the quotient 5 as the next digit in the result. 
Result so far: 155125.245
Subtracting 2530 from 2560 leaves us with 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

Let's proceed to step 12:
The number 506 fits into 300 0 times, leaving a remainder of 300.
Record the quotient 0 as the next digit in the result. 
Result so far: 155125.245
If we subtract 0 from 300, we get 300.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3000, and continue the process.

Advancing to step 13:
506 goes into 3000 5 times with a remainder of 470.
Put 5 as the next digit of the answer. 
Result so far: 155125.24505
Subtract 2530 from 3000 to get 470.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4700, and continue the process.

On to step 14:
If we divide 4700 by 506, we get 9 and a remainder of 146.
Use 9 as the next digit of our solution. 
Result so far: 155125.245059
Deduct 4554 from 4700 and we're left with 146.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1460, and continue the process.

Step 15:
When dividing 1460 by 506, we get 2 with a remainder of 448.
Put 2 as the next digit of the answer. 
Result so far: 155125.2450592
If we take 1012 away from 1460, we end up with 448.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4480, and continue the process.

Advancing to step 16:
When dividing 4480 by 506, we get 8 with a remainder of 432.
The next digit of our result is 8. 
Result so far: 155125.24505928
Deduct 4048 from 4480 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.

The final result is 155125.24505928 with a remainder of 4.32e-07.