Let's divide 30786891 by 45
We want to figure out the number of times 30786891 can be divided by 45.

Going ahead to step 1:
The number 45 fits into 3 0 times, leaving a remainder of 3.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 3, we get 3.
Include the next digit (0) from the dividend after 3, then repeat: 30 / 45

Moving on to step 2:
45 goes into 30 0 times with a remainder of 30.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 30 leaves us with 30.
Take the next digit (7) from the dividend and append it to 30, then repeat: 307 / 45

Going ahead to step 3:
When dividing 307 by 45, we get 6 with a remainder of 37.
The next digit of our result is 6. 
Result so far: 6.0
The remainder is 37 after subtracting 270 from 307.
Bring next digit (8) of the dividend behind the 37 and repeat the process: 378 / 45

Moving on to step 4:
If we divide 378 by 45, we get 8 and a remainder of 18.
Write down 8 as next digit of the result. 
Result so far: 68.0
Deduct 360 from 378 and we're left with 18.
Grab the next digit (6) from the dividend, add it to 18, then carry on: 186 / 45

Advancing to step 5:
45 can be fit into 186 4 times, resulting in a remainder of 6.
Write down 4 as next digit of the result. 
Result so far: 684.0
Subtracting 180 from 186 leaves us with 6.
Include the next digit (8) from the dividend after 6, then repeat: 68 / 45

Moving on to step 6:
68 divided by 45 is 1 with a remainder of 23.
Use 1 as the next digit of our solution. 
Result so far: 6841.0
Subtract 45 from 68 to get 23.
Fetch the next digit (9) from the dividend, attach it to 23 and continue: 239 / 45

Going ahead to step 7:
The number 45 fits into 239 5 times, leaving a remainder of 14.
Use 5 as the next digit of our solution. 
Result so far: 68415.0
Subtracting 225 from 239 leaves us with 14.
Bring next digit (1) of the dividend behind the 14 and repeat the process: 141 / 45

Going ahead to step 8:
45 can be fit into 141 3 times, resulting in a remainder of 6.
The number 3 becomes the next digit in our result. 
Result so far: 684153.0
Subtracting 135 from 141 leaves us with 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Moving on to step 9:
The number 45 fits into 60 1 times, leaving a remainder of 15.
Put 1 as the next digit of the answer. 
Result so far: 684153.1
Subtracting 45 from 60 leaves us with 15.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

Going ahead to step 10:
45 can be fit into 150 3 times, resulting in a remainder of 15.
The number 3 becomes the next digit in our result. 
Result so far: 684153.13
Deduct 135 from 150 and we're left with 15.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

Going ahead to step 11:
45 can be fit into 150 3 times, resulting in a remainder of 15.
Use 3 as the next digit of our solution. 
Result so far: 684153.133
Subtract 135 from 150 to get 15.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

Our division results in 684153.133 with a remaining 0.0015.