51990494 ÷ 150 
The aim is to understand the frequency of 150 in 51990494.

Let's proceed to step 1:
When dividing 5 by 150, we get 0 with a remainder of 5.
The number 0 becomes the next digit in our result. 
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 / 150

Moving on to step 2:
150 goes into 51 0 times with a remainder of 51.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 51 after subtracting 0 from 51.
Append the next digit (9) from the dividend to 51 and continue with: 519 / 150

Step 3:
150 can be fit into 519 3 times, resulting in a remainder of 69.
The next digit of our result is 3. 
Result so far: 3.0
The remainder is 69 after subtracting 450 from 519.
Bring next digit (9) of the dividend behind the 69 and repeat the process: 699 / 150

Moving on to step 4:
699 divided by 150 is 4 with a remainder of 99.
Use 4 as the next digit of our solution. 
Result so far: 34.0
If we take 600 away from 699, we end up with 99.
Append the next digit (0) from the dividend to 99 and continue with: 990 / 150

Step 5:
The number 150 fits into 990 6 times, leaving a remainder of 90.
Use 6 as the next digit of our solution. 
Result so far: 346.0
Subtract 900 from 990 to get 90.
Bring next digit (4) of the dividend behind the 90 and repeat the process: 904 / 150

Moving on to step 6:
904 divided by 150 is 6 with a remainder of 4.
Write down 6 as next digit of the result. 
Result so far: 3466.0
If we take 900 away from 904, we end up with 4.
Take the next digit (9) from the dividend and append it to 4, then repeat: 49 / 150

Moving on to step 7:
When dividing 49 by 150, we get 0 with a remainder of 49.
Write down 0 as next digit of the result. 
Result so far: 34660.0
Subtract 0 from 49 to get 49.
Grab the next digit (4) from the dividend, add it to 49, then carry on: 494 / 150

Step 8:
When dividing 494 by 150, we get 3 with a remainder of 44.
The number 3 becomes the next digit in our result. 
Result so far: 346603.0
Subtracting 450 from 494 leaves us with 44.
Since there are no more digits in the dividend, we add a zero to the remainder making it 440, and continue the process.

On to step 9:
When dividing 440 by 150, we get 2 with a remainder of 140.
Record the quotient 2 as the next digit in the result. 
Result so far: 346603.2
Deduct 300 from 440 and we're left with 140.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1400, and continue the process.

Let's proceed to step 10:
When dividing 1400 by 150, we get 9 with a remainder of 50.
The next digit of our result is 9. 
Result so far: 346603.29
Deduct 1350 from 1400 and we're left with 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

Step 11:
When dividing 500 by 150, we get 3 with a remainder of 50.
Record the quotient 3 as the next digit in the result. 
Result so far: 346603.293
If we subtract 450 from 500, we get 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

Going ahead to step 12:
If we divide 500 by 150, we get 3 and a remainder of 50.
Record the quotient 3 as the next digit in the result. 
Result so far: 346603.2933
The remainder is 50 after subtracting 450 from 500.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

Our division results in 346603.2933 with a remaining 0.0005.