We look at the division of 51837173 by 368 
The aim is to understand the frequency of 368 in 51837173.

On to step 1:
5 divided by 368 is 0 with a remainder of 5.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 5 and we're left with 5.
Append the next digit (1) from the dividend to 5 and continue with: 51 / 368

On to step 2:
368 can be fit into 51 0 times, resulting in a remainder of 51.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 51 to get 51.
Fetch the next digit (8) from the dividend, attach it to 51 and continue: 518 / 368

Going ahead to step 3:
368 can be fit into 518 1 times, resulting in a remainder of 150.
Put 1 as the next digit of the answer. 
Result so far: 1.0
Deduct 368 from 518 and we're left with 150.
Bring next digit (3) of the dividend behind the 150 and repeat the process: 1503 / 368

Moving on to step 4:
When dividing 1503 by 368, we get 4 with a remainder of 31.
The next digit of our result is 4. 
Result so far: 14.0
Deduct 1472 from 1503 and we're left with 31.
Bring next digit (7) of the dividend behind the 31 and repeat the process: 317 / 368

Going ahead to step 5:
The number 368 fits into 317 0 times, leaving a remainder of 317.
Write down 0 as next digit of the result. 
Result so far: 140.0
If we take 0 away from 317, we end up with 317.
Take the next digit (1) from the dividend and append it to 317, then repeat: 3171 / 368

Going ahead to step 6:
368 goes into 3171 8 times with a remainder of 227.
Put 8 as the next digit of the answer. 
Result so far: 1408.0
The remainder is 227 after subtracting 2944 from 3171.
Include the next digit (7) from the dividend after 227, then repeat: 2277 / 368

Moving on to step 7:
368 goes into 2277 6 times with a remainder of 69.
Record the quotient 6 as the next digit in the result. 
Result so far: 14086.0
If we subtract 2208 from 2277, we get 69.
Bring next digit (3) of the dividend behind the 69 and repeat the process: 693 / 368

Going ahead to step 8:
368 can be fit into 693 1 times, resulting in a remainder of 325.
Write down 1 as next digit of the result. 
Result so far: 140861.0
Subtract 368 from 693 to get 325.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3250, and continue the process.

On to step 9:
3250 divided by 368 is 8 with a remainder of 306.
The next digit of our result is 8. 
Result so far: 140861.8
Subtract 2944 from 3250 to get 306.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3060, and continue the process.

Advancing to step 10:
When dividing 3060 by 368, we get 8 with a remainder of 116.
Put 8 as the next digit of the answer. 
Result so far: 140861.88
If we subtract 2944 from 3060, we get 116.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1160, and continue the process.

Our division results in 140861.88 with a remaining 0.116.