We look at the division of 78619138 by 513 
The aim is to understand the frequency of 513 in 78619138.

On to step 1:
513 can be fit into 7 0 times, resulting in a remainder of 7.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 7 to get 7.
Bring next digit (8) of the dividend behind the 7 and repeat the process: 78 / 513

Advancing to step 2:
513 goes into 78 0 times with a remainder of 78.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 78 to get 78.
Append the next digit (6) from the dividend to 78 and continue with: 786 / 513

Step 3:
513 goes into 786 1 times with a remainder of 273.
Write down 1 as next digit of the result. 
Result so far: 1.0
Deduct 513 from 786 and we're left with 273.
Bring next digit (1) of the dividend behind the 273 and repeat the process: 2731 / 513

Going ahead to step 4:
The number 513 fits into 2731 5 times, leaving a remainder of 166.
Write down 5 as next digit of the result. 
Result so far: 15.0
Deduct 2565 from 2731 and we're left with 166.
Fetch the next digit (9) from the dividend, attach it to 166 and continue: 1669 / 513

On to step 5:
1669 divided by 513 is 3 with a remainder of 130.
Put 3 as the next digit of the answer. 
Result so far: 153.0
The remainder is 130 after subtracting 1539 from 1669.
Fetch the next digit (1) from the dividend, attach it to 130 and continue: 1301 / 513

Advancing to step 6:
The number 513 fits into 1301 2 times, leaving a remainder of 275.
Put 2 as the next digit of the answer. 
Result so far: 1532.0
The remainder is 275 after subtracting 1026 from 1301.
Grab the next digit (3) from the dividend, add it to 275, then carry on: 2753 / 513

Moving on to step 7:
513 can be fit into 2753 5 times, resulting in a remainder of 188.
The next digit of our result is 5. 
Result so far: 15325.0
Deduct 2565 from 2753 and we're left with 188.
Append the next digit (8) from the dividend to 188 and continue with: 1888 / 513

On to step 8:
513 goes into 1888 3 times with a remainder of 349.
Record the quotient 3 as the next digit in the result. 
Result so far: 153253.0
If we take 1539 away from 1888, we end up with 349.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3490, and continue the process.

Going ahead to step 9:
If we divide 3490 by 513, we get 6 and a remainder of 412.
Use 6 as the next digit of our solution. 
Result so far: 153253.6
Subtracting 3078 from 3490 leaves us with 412.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4120, and continue the process.

Moving on to step 10:
The number 513 fits into 4120 8 times, leaving a remainder of 16.
Use 8 as the next digit of our solution. 
Result so far: 153253.68
Subtract 4104 from 4120 to get 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

Step 11:
The number 513 fits into 160 0 times, leaving a remainder of 160.
Put 0 as the next digit of the answer. 
Result so far: 153253.68
If we take 0 away from 160, we end up with 160.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1600, and continue the process.

Going ahead to step 12:
513 goes into 1600 3 times with a remainder of 61.
Write down 3 as next digit of the result. 
Result so far: 153253.6803
If we subtract 1539 from 1600, we get 61.
Since there are no more digits in the dividend, we add a zero to the remainder making it 610, and continue the process.

Advancing to step 13:
513 can be fit into 610 1 times, resulting in a remainder of 97.
The next digit of our result is 1. 
Result so far: 153253.68031
Subtracting 513 from 610 leaves us with 97.
Since there are no more digits in the dividend, we add a zero to the remainder making it 970, and continue the process.

Moving on to step 14:
970 divided by 513 is 1 with a remainder of 457.
Use 1 as the next digit of our solution. 
Result so far: 153253.680311
Deduct 513 from 970 and we're left with 457.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4570, and continue the process.

The quotient of the division is 153253.680311, and the remainder is 4.57e-05.