51574251 ÷ 374 
The aim is to understand the frequency of 374 in 51574251.

Going ahead to step 1:
374 can be fit into 5 0 times, resulting in a remainder of 5.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 5, we get 5.
Fetch the next digit (1) from the dividend, attach it to 5 and continue: 51 / 374

Let's proceed to step 2:
51 divided by 374 is 0 with a remainder of 51.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 51, we get 51.
Fetch the next digit (5) from the dividend, attach it to 51 and continue: 515 / 374

On to step 3:
The number 374 fits into 515 1 times, leaving a remainder of 141.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
If we take 374 away from 515, we end up with 141.
Take the next digit (7) from the dividend and append it to 141, then repeat: 1417 / 374

Step 4:
1417 divided by 374 is 3 with a remainder of 295.
Write down 3 as next digit of the result. 
Result so far: 13.0
If we take 1122 away from 1417, we end up with 295.
Grab the next digit (4) from the dividend, add it to 295, then carry on: 2954 / 374

Step 5:
374 can be fit into 2954 7 times, resulting in a remainder of 336.
Put 7 as the next digit of the answer. 
Result so far: 137.0
Subtract 2618 from 2954 to get 336.
Grab the next digit (2) from the dividend, add it to 336, then carry on: 3362 / 374

Let's proceed to step 6:
If we divide 3362 by 374, we get 8 and a remainder of 370.
The next digit of our result is 8. 
Result so far: 1378.0
Deduct 2992 from 3362 and we're left with 370.
Bring next digit (5) of the dividend behind the 370 and repeat the process: 3705 / 374

On to step 7:
The number 374 fits into 3705 9 times, leaving a remainder of 339.
Put 9 as the next digit of the answer. 
Result so far: 13789.0
Deduct 3366 from 3705 and we're left with 339.
Include the next digit (1) from the dividend after 339, then repeat: 3391 / 374

On to step 8:
3391 divided by 374 is 9 with a remainder of 25.
Put 9 as the next digit of the answer. 
Result so far: 137899.0
Deduct 3366 from 3391 and we're left with 25.
Since there are no more digits in the dividend, we add a zero to the remainder making it 250, and continue the process.

Let's proceed to step 9:
250 divided by 374 is 0 with a remainder of 250.
The number 0 becomes the next digit in our result. 
Result so far: 137899.0
If we subtract 0 from 250, we get 250.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2500, and continue the process.

Moving on to step 10:
The number 374 fits into 2500 6 times, leaving a remainder of 256.
Use 6 as the next digit of our solution. 
Result so far: 137899.06
If we subtract 2244 from 2500, we get 256.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2560, and continue the process.

Let's proceed to step 11:
374 goes into 2560 6 times with a remainder of 316.
Record the quotient 6 as the next digit in the result. 
Result so far: 137899.066
Subtracting 2244 from 2560 leaves us with 316.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3160, and continue the process.

After the division, we end up with 137899.066 and a remainder of 0.0316.