We're dividing 47845551 by 645 
Let's see how many times 645 fits into 47845551.

Going ahead to step 1:
When dividing 4 by 645, we get 0 with a remainder of 4.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 4, we get 4.
Grab the next digit (7) from the dividend, add it to 4, then carry on: 47 / 645

On to step 2:
645 goes into 47 0 times with a remainder of 47.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtracting 0 from 47 leaves us with 47.
Include the next digit (8) from the dividend after 47, then repeat: 478 / 645

On to step 3:
645 goes into 478 0 times with a remainder of 478.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 478 leaves us with 478.
Append the next digit (4) from the dividend to 478 and continue with: 4784 / 645

Let's proceed to step 4:
645 can be fit into 4784 7 times, resulting in a remainder of 269.
Record the quotient 7 as the next digit in the result. 
Result so far: 7.0
If we take 4515 away from 4784, we end up with 269.
Bring next digit (5) of the dividend behind the 269 and repeat the process: 2695 / 645

Going ahead to step 5:
When dividing 2695 by 645, we get 4 with a remainder of 115.
The number 4 becomes the next digit in our result. 
Result so far: 74.0
Subtract 2580 from 2695 to get 115.
Fetch the next digit (5) from the dividend, attach it to 115 and continue: 1155 / 645

Step 6:
645 can be fit into 1155 1 times, resulting in a remainder of 510.
The next digit of our result is 1. 
Result so far: 741.0
Subtract 645 from 1155 to get 510.
Take the next digit (5) from the dividend and append it to 510, then repeat: 5105 / 645

On to step 7:
The number 645 fits into 5105 7 times, leaving a remainder of 590.
The number 7 becomes the next digit in our result. 
Result so far: 7417.0
Subtract 4515 from 5105 to get 590.
Append the next digit (1) from the dividend to 590 and continue with: 5901 / 645

Going ahead to step 8:
5901 divided by 645 is 9 with a remainder of 96.
Put 9 as the next digit of the answer. 
Result so far: 74179.0
Subtracting 5805 from 5901 leaves us with 96.
Since there are no more digits in the dividend, we add a zero to the remainder making it 960, and continue the process.

On to step 9:
645 can be fit into 960 1 times, resulting in a remainder of 315.
Write down 1 as next digit of the result. 
Result so far: 74179.1
The remainder is 315 after subtracting 645 from 960.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3150, and continue the process.

Step 10:
645 goes into 3150 4 times with a remainder of 570.
The number 4 becomes the next digit in our result. 
Result so far: 74179.14
If we take 2580 away from 3150, we end up with 570.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5700, and continue the process.

Step 11:
645 can be fit into 5700 8 times, resulting in a remainder of 540.
The next digit of our result is 8. 
Result so far: 74179.148
If we subtract 5160 from 5700, we get 540.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5400, and continue the process.

On to step 12:
5400 divided by 645 is 8 with a remainder of 240.
Write down 8 as next digit of the result. 
Result so far: 74179.1488
Deduct 5160 from 5400 and we're left with 240.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2400, and continue the process.

The final outcome is 74179.1488, with a leftover of 0.0024.