81861206 divided by 150 
The aim is to understand the frequency of 150 in 81861206.

Moving on to step 1:
When dividing 8 by 150, we get 0 with a remainder of 8.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtract 0 from 8 to get 8.
Include the next digit (1) from the dividend after 8, then repeat: 81 / 150

Advancing to step 2:
The number 150 fits into 81 0 times, leaving a remainder of 81.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
The remainder is 81 after subtracting 0 from 81.
Fetch the next digit (8) from the dividend, attach it to 81 and continue: 818 / 150

Moving on to step 3:
150 can be fit into 818 5 times, resulting in a remainder of 68.
Put 5 as the next digit of the answer. 
Result so far: 5.0
Subtracting 750 from 818 leaves us with 68.
Grab the next digit (6) from the dividend, add it to 68, then carry on: 686 / 150

Going ahead to step 4:
The number 150 fits into 686 4 times, leaving a remainder of 86.
Use 4 as the next digit of our solution. 
Result so far: 54.0
The remainder is 86 after subtracting 600 from 686.
Take the next digit (1) from the dividend and append it to 86, then repeat: 861 / 150

On to step 5:
150 can be fit into 861 5 times, resulting in a remainder of 111.
Write down 5 as next digit of the result. 
Result so far: 545.0
The remainder is 111 after subtracting 750 from 861.
Grab the next digit (2) from the dividend, add it to 111, then carry on: 1112 / 150

Moving on to step 6:
If we divide 1112 by 150, we get 7 and a remainder of 62.
Put 7 as the next digit of the answer. 
Result so far: 5457.0
Deduct 1050 from 1112 and we're left with 62.
Bring next digit (0) of the dividend behind the 62 and repeat the process: 620 / 150

On to step 7:
150 can be fit into 620 4 times, resulting in a remainder of 20.
Record the quotient 4 as the next digit in the result. 
Result so far: 54574.0
Subtract 600 from 620 to get 20.
Bring next digit (6) of the dividend behind the 20 and repeat the process: 206 / 150

Moving on to step 8:
The number 150 fits into 206 1 times, leaving a remainder of 56.
The number 1 becomes the next digit in our result. 
Result so far: 545741.0
Deduct 150 from 206 and we're left with 56.
Since there are no more digits in the dividend, we add a zero to the remainder making it 560, and continue the process.

Advancing to step 9:
When dividing 560 by 150, we get 3 with a remainder of 110.
The number 3 becomes the next digit in our result. 
Result so far: 545741.3
Subtract 450 from 560 to get 110.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1100, and continue the process.

Moving on to step 10:
When dividing 1100 by 150, we get 7 with a remainder of 50.
Write down 7 as next digit of the result. 
Result so far: 545741.37
Subtract 1050 from 1100 to 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 11:
500 divided by 150 is 3 with a remainder of 50.
Use 3 as the next digit of our solution. 
Result so far: 545741.373
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.

Advancing to step 12:
500 divided by 150 is 3 with a remainder of 50.
Use 3 as the next digit of our solution. 
Result so far: 545741.3733
Subtract 450 from 500 to 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.

After the division, we end up with 545741.3733 and a remainder of 0.0005.