We're dividing 81550420 by 186 
We're looking to find how many times 186 goes into 81550420.

Moving on to step 1:
186 goes into 8 0 times with a remainder of 8.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 8 and we're left with 8.
Take the next digit (1) from the dividend and append it to 8, then repeat: 81 / 186

Moving on to step 2:
When dividing 81 by 186, we get 0 with a remainder of 81.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 81 to get 81.
Grab the next digit (5) from the dividend, add it to 81, then carry on: 815 / 186

On to step 3:
815 divided by 186 is 4 with a remainder of 71.
Write down 4 as next digit of the result. 
Result so far: 4.0
Subtract 744 from 815 to get 71.
Grab the next digit (5) from the dividend, add it to 71, then carry on: 715 / 186

Let's proceed to step 4:
715 divided by 186 is 3 with a remainder of 157.
The number 3 becomes the next digit in our result. 
Result so far: 43.0
If we take 558 away from 715, we end up with 157.
Bring next digit (0) of the dividend behind the 157 and repeat the process: 1570 / 186

Advancing to step 5:
186 can be fit into 1570 8 times, resulting in a remainder of 82.
Put 8 as the next digit of the answer. 
Result so far: 438.0
If we subtract 1488 from 1570, we get 82.
Fetch the next digit (4) from the dividend, attach it to 82 and continue: 824 / 186

On to step 6:
The number 186 fits into 824 4 times, leaving a remainder of 80.
The next digit of our result is 4. 
Result so far: 4384.0
Subtract 744 from 824 to get 80.
Append the next digit (2) from the dividend to 80 and continue with: 802 / 186

Moving on to step 7:
If we divide 802 by 186, we get 4 and a remainder of 58.
Put 4 as the next digit of the answer. 
Result so far: 43844.0
If we subtract 744 from 802, we get 58.
Include the next digit (0) from the dividend after 58, then repeat: 580 / 186

Moving on to step 8:
The number 186 fits into 580 3 times, leaving a remainder of 22.
Record the quotient 3 as the next digit in the result. 
Result so far: 438443.0
The remainder is 22 after subtracting 558 from 580.
Since there are no more digits in the dividend, we add a zero to the remainder making it 220, and continue the process.

Moving on to step 9:
220 divided by 186 is 1 with a remainder of 34.
Write down 1 as next digit of the result. 
Result so far: 438443.1
If we take 186 away from 220, we end up with 34.
Since there are no more digits in the dividend, we add a zero to the remainder making it 340, and continue the process.

Moving on to step 10:
When dividing 340 by 186, we get 1 with a remainder of 154.
Put 1 as the next digit of the answer. 
Result so far: 438443.11
If we subtract 186 from 340, we get 154.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1540, and continue the process.

The final outcome is 438443.11, with a leftover of 0.154.