53645914 divided by 821 
Let's see how many times 821 fits into 53645914.

Moving on to step 1:
821 can be fit into 5 0 times, resulting in 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.
Include the next digit (3) from the dividend after 5, then repeat: 53 / 821

Going ahead to step 2:
The number 821 fits into 53 0 times, leaving a remainder of 53.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 53 to get 53.
Take the next digit (6) from the dividend and append it to 53, then repeat: 536 / 821

Let's proceed to step 3:
The number 821 fits into 536 0 times, leaving a remainder of 536.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 536, we get 536.
Fetch the next digit (4) from the dividend, attach it to 536 and continue: 5364 / 821

On to step 4:
The number 821 fits into 5364 6 times, leaving a remainder of 438.
The next digit of our result is 6. 
Result so far: 6.0
Deduct 4926 from 5364 and we're left with 438.
Fetch the next digit (5) from the dividend, attach it to 438 and continue: 4385 / 821

Step 5:
When dividing 4385 by 821, we get 5 with a remainder of 280.
Write down 5 as next digit of the result. 
Result so far: 65.0
Subtract 4105 from 4385 to get 280.
Fetch the next digit (9) from the dividend, attach it to 280 and continue: 2809 / 821

Advancing to step 6:
2809 divided by 821 is 3 with a remainder of 346.
Put 3 as the next digit of the answer. 
Result so far: 653.0
If we subtract 2463 from 2809, we get 346.
Include the next digit (1) from the dividend after 346, then repeat: 3461 / 821

Let's proceed to step 7:
821 can be fit into 3461 4 times, resulting in a remainder of 177.
The number 4 becomes the next digit in our result. 
Result so far: 6534.0
Subtract 3284 from 3461 to get 177.
Take the next digit (4) from the dividend and append it to 177, then repeat: 1774 / 821

Advancing to step 8:
821 goes into 1774 2 times with a remainder of 132.
Write down 2 as next digit of the result. 
Result so far: 65342.0
Subtracting 1642 from 1774 leaves us with 132.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1320, and continue the process.

Advancing to step 9:
The number 821 fits into 1320 1 times, leaving a remainder of 499.
Write down 1 as next digit of the result. 
Result so far: 65342.1
Subtracting 821 from 1320 leaves us with 499.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4990, and continue the process.

Going ahead to step 10:
When dividing 4990 by 821, we get 6 with a remainder of 64.
Put 6 as the next digit of the answer. 
Result so far: 65342.16
Subtracting 4926 from 4990 leaves us with 64.
Since there are no more digits in the dividend, we add a zero to the remainder making it 640, and continue the process.

Step 11:
The number 821 fits into 640 0 times, leaving a remainder of 640.
The next digit of our result is 0. 
Result so far: 65342.16
If we subtract 0 from 640, we get 640.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6400, and continue the process.

Step 12:
821 goes into 6400 7 times with a remainder of 653.
Put 7 as the next digit of the answer. 
Result so far: 65342.1607
If we take 5747 away from 6400, we end up with 653.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6530, and continue the process.

Going ahead to step 13:
The number 821 fits into 6530 7 times, leaving a remainder of 783.
Put 7 as the next digit of the answer. 
Result so far: 65342.16077
Deduct 5747 from 6530 and we're left with 783.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7830, and continue the process.

After the division, we end up with 65342.16077 and a remainder of 0.000783.