836921 ÷ 45 
We want to figure out the number of times 836921 can be divided by 45.

Advancing to step 1:
The number 45 fits into 8 0 times, leaving a remainder of 8.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 8, we end up with 8.
Grab the next digit (3) from the dividend, add it to 8, then carry on: 83 / 45

Let's proceed to step 2:
45 goes into 83 1 times with a remainder of 38.
Put 1 as the next digit of the answer. 
Result so far: 1.0
If we take 45 away from 83, we end up with 38.
Take the next digit (6) from the dividend and append it to 38, then repeat: 386 / 45

Going ahead to step 3:
386 divided by 45 is 8 with a remainder of 26.
Write down 8 as next digit of the result. 
Result so far: 18.0
Subtracting 360 from 386 leaves us with 26.
Include the next digit (9) from the dividend after 26, then repeat: 269 / 45

Advancing to step 4:
When dividing 269 by 45, we get 5 with a remainder of 44.
Write down 5 as next digit of the result. 
Result so far: 185.0
The remainder is 44 after subtracting 225 from 269.
Append the next digit (2) from the dividend to 44 and continue with: 442 / 45

Let's proceed to step 5:
When dividing 442 by 45, we get 9 with a remainder of 37.
Use 9 as the next digit of our solution. 
Result so far: 1859.0
If we subtract 405 from 442, we get 37.
Fetch the next digit (1) from the dividend, attach it to 37 and continue: 371 / 45

Moving on to step 6:
371 divided by 45 is 8 with a remainder of 11.
The next digit of our result is 8. 
Result so far: 18598.0
Deduct 360 from 371 and we're left with 11.
Since there are no more digits in the dividend, we add a zero to the remainder making it 110, and continue the process.

Step 7:
If we divide 110 by 45, we get 2 and a remainder of 20.
Put 2 as the next digit of the answer. 
Result so far: 18598.2
Subtracting 90 from 110 leaves us with 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Step 8:
45 can be fit into 200 4 times, resulting in a remainder of 20.
Put 4 as the next digit of the answer. 
Result so far: 18598.24
Subtracting 180 from 200 leaves us with 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Step 9:
45 goes into 200 4 times with a remainder of 20.
The number 4 becomes the next digit in our result. 
Result so far: 18598.244
Subtract 180 from 200 to get 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

The quotient of the division is 18598.244, and the remainder is 0.002.