81961816 ÷ 590 
We're looking to find how many times 590 goes into 81961816.

Going ahead to step 1:
8 divided by 590 is 0 with a remainder of 8.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 8 and we're left with 8.
Include the next digit (1) from the dividend after 8, then repeat: 81 / 590

Let's proceed to step 2:
When dividing 81 by 590, we get 0 with a remainder of 81.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we subtract 0 from 81, we get 81.
Bring next digit (9) of the dividend behind the 81 and repeat the process: 819 / 590

On to step 3:
590 can be fit into 819 1 times, resulting in a remainder of 229.
The next digit of our result is 1. 
Result so far: 1.0
Deduct 590 from 819 and we're left with 229.
Fetch the next digit (6) from the dividend, attach it to 229 and continue: 2296 / 590

Step 4:
590 goes into 2296 3 times with a remainder of 526.
Put 3 as the next digit of the answer. 
Result so far: 13.0
Deduct 1770 from 2296 and we're left with 526.
Fetch the next digit (1) from the dividend, attach it to 526 and continue: 5261 / 590

On to step 5:
The number 590 fits into 5261 8 times, leaving a remainder of 541.
Use 8 as the next digit of our solution. 
Result so far: 138.0
If we take 4720 away from 5261, we end up with 541.
Take the next digit (8) from the dividend and append it to 541, then repeat: 5418 / 590

On to step 6:
When dividing 5418 by 590, we get 9 with a remainder of 108.
Put 9 as the next digit of the answer. 
Result so far: 1389.0
Subtracting 5310 from 5418 leaves us with 108.
Grab the next digit (1) from the dividend, add it to 108, then carry on: 1081 / 590

Let's proceed to step 7:
If we divide 1081 by 590, we get 1 and a remainder of 491.
Put 1 as the next digit of the answer. 
Result so far: 13891.0
Subtracting 590 from 1081 leaves us with 491.
Grab the next digit (6) from the dividend, add it to 491, then carry on: 4916 / 590

Advancing to step 8:
590 can be fit into 4916 8 times, resulting in a remainder of 196.
The number 8 becomes the next digit in our result. 
Result so far: 138918.0
Subtracting 4720 from 4916 leaves us with 196.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1960, and continue the process.

On to step 9:
590 can be fit into 1960 3 times, resulting in a remainder of 190.
Put 3 as the next digit of the answer. 
Result so far: 138918.3
Subtracting 1770 from 1960 leaves us with 190.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1900, and continue the process.

Step 10:
The number 590 fits into 1900 3 times, leaving a remainder of 130.
Record the quotient 3 as the next digit in the result. 
Result so far: 138918.33
Subtract 1770 from 1900 to get 130.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1300, and continue the process.

Our division results in 138918.33 with a remaining 0.13.