We're dividing 81531898 by 150 
We're looking to find how many times 150 goes into 81531898.

Going ahead to step 1:
When dividing 8 by 150, we get 0 with a remainder of 8.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 8, we end up with 8.
Grab the next digit (1) from the dividend, add it to 8, then carry on: 81 / 150

Step 2:
The number 150 fits into 81 0 times, leaving a remainder of 81.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtract 0 from 81 to get 81.
Fetch the next digit (5) from the dividend, attach it to 81 and continue: 815 / 150

Going ahead to step 3:
When dividing 815 by 150, we get 5 with a remainder of 65.
Put 5 as the next digit of the answer. 
Result so far: 5.0
Subtracting 750 from 815 leaves us with 65.
Grab the next digit (3) from the dividend, add it to 65, then carry on: 653 / 150

Going ahead to step 4:
150 can be fit into 653 4 times, resulting in a remainder of 53.
The number 4 becomes the next digit in our result. 
Result so far: 54.0
If we subtract 600 from 653, we get 53.
Fetch the next digit (1) from the dividend, attach it to 53 and continue: 531 / 150

Advancing to step 5:
If we divide 531 by 150, we get 3 and a remainder of 81.
Put 3 as the next digit of the answer. 
Result so far: 543.0
If we subtract 450 from 531, we get 81.
Grab the next digit (8) from the dividend, add it to 81, then carry on: 818 / 150

Step 6:
150 goes into 818 5 times with a remainder of 68.
Write down 5 as next digit of the result. 
Result so far: 5435.0
If we subtract 750 from 818, we get 68.
Append the next digit (9) from the dividend to 68 and continue with: 689 / 150

On to step 7:
The number 150 fits into 689 4 times, leaving a remainder of 89.
The next digit of our result is 4. 
Result so far: 54354.0
Subtracting 600 from 689 leaves us with 89.
Fetch the next digit (8) from the dividend, attach it to 89 and continue: 898 / 150

Let's proceed to step 8:
The number 150 fits into 898 5 times, leaving a remainder of 148.
Write down 5 as next digit of the result. 
Result so far: 543545.0
If we take 750 away from 898, we end up with 148.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1480, and continue the process.

On to step 9:
When dividing 1480 by 150, we get 9 with a remainder of 130.
The next digit of our result is 9. 
Result so far: 543545.9
Deduct 1350 from 1480 and we're left with 130.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1300, and continue the process.

Step 10:
The number 150 fits into 1300 8 times, leaving a remainder of 100.
The next digit of our result is 8. 
Result so far: 543545.98
Subtract 1200 from 1300 to get 100.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1000, and continue the process.

Step 11:
1000 divided by 150 is 6 with a remainder of 100.
Put 6 as the next digit of the answer. 
Result so far: 543545.986
Subtract 900 from 1000 to get 100.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1000, and continue the process.

On to step 12:
The number 150 fits into 1000 6 times, leaving a remainder of 100.
Record the quotient 6 as the next digit in the result. 
Result so far: 543545.9866
If we subtract 900 from 1000, we get 100.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1000, and continue the process.

The final result is 543545.9866 with a remainder of 0.001.