45394323 divided by 879 
Let's see how many times 879 fits into 45394323.

Advancing to step 1:
The number 879 fits into 4 0 times, leaving a remainder of 4.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
The remainder is 4 after subtracting 0 from 4.
Grab the next digit (5) from the dividend, add it to 4, then carry on: 45 / 879

Advancing to step 2:
45 divided by 879 is 0 with a remainder of 45.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we subtract 0 from 45, we get 45.
Include the next digit (3) from the dividend after 45, then repeat: 453 / 879

Going ahead to step 3:
The number 879 fits into 453 0 times, leaving a remainder of 453.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 453 leaves us with 453.
Include the next digit (9) from the dividend after 453, then repeat: 4539 / 879

Moving on to step 4:
4539 divided by 879 is 5 with a remainder of 144.
Use 5 as the next digit of our solution. 
Result so far: 5.0
Deduct 4395 from 4539 and we're left with 144.
Take the next digit (4) from the dividend and append it to 144, then repeat: 1444 / 879

Moving on to step 5:
879 can be fit into 1444 1 times, resulting in a remainder of 565.
Record the quotient 1 as the next digit in the result. 
Result so far: 51.0
Subtract 879 from 1444 to get 565.
Take the next digit (3) from the dividend and append it to 565, then repeat: 5653 / 879

On to step 6:
879 goes into 5653 6 times with a remainder of 379.
Record the quotient 6 as the next digit in the result. 
Result so far: 516.0
Deduct 5274 from 5653 and we're left with 379.
Take the next digit (2) from the dividend and append it to 379, then repeat: 3792 / 879

Moving on to step 7:
The number 879 fits into 3792 4 times, leaving a remainder of 276.
The next digit of our result is 4. 
Result so far: 5164.0
If we subtract 3516 from 3792, we get 276.
Take the next digit (3) from the dividend and append it to 276, then repeat: 2763 / 879

Advancing to step 8:
879 goes into 2763 3 times with a remainder of 126.
The number 3 becomes the next digit in our result. 
Result so far: 51643.0
If we take 2637 away from 2763, we end up with 126.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1260, and continue the process.

Advancing to step 9:
When dividing 1260 by 879, we get 1 with a remainder of 381.
Use 1 as the next digit of our solution. 
Result so far: 51643.1
If we subtract 879 from 1260, we get 381.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3810, and continue the process.

Going ahead to step 10:
The number 879 fits into 3810 4 times, leaving a remainder of 294.
Put 4 as the next digit of the answer. 
Result so far: 51643.14
Subtracting 3516 from 3810 leaves us with 294.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2940, and continue the process.

Let's proceed to step 11:
If we divide 2940 by 879, we get 3 and a remainder of 303.
Use 3 as the next digit of our solution. 
Result so far: 51643.143
If we take 2637 away from 2940, we end up with 303.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3030, and continue the process.

Moving on to step 12:
879 can be fit into 3030 3 times, resulting in a remainder of 393.
Record the quotient 3 as the next digit in the result. 
Result so far: 51643.1433
If we subtract 2637 from 3030, we get 393.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3930, and continue the process.

After the division, we end up with 51643.1433 and a remainder of 0.00393.