We look at the division of 45639687 by 609 
We're looking to find how many times 609 goes into 45639687.

Step 1:
If we divide 4 by 609, we get 0 and a remainder of 4.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 4, we get 4.
Include the next digit (5) from the dividend after 4, then repeat: 45 / 609

Step 2:
45 divided by 609 is 0 with a remainder of 45.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 45 to get 45.
Bring next digit (6) of the dividend behind the 45 and repeat the process: 456 / 609

Advancing to step 3:
609 goes into 456 0 times with a remainder of 456.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 456, we end up with 456.
Bring next digit (3) of the dividend behind the 456 and repeat the process: 4563 / 609

Moving on to step 4:
4563 divided by 609 is 7 with a remainder of 300.
Write down 7 as next digit of the result. 
Result so far: 7.0
If we subtract 4263 from 4563, we get 300.
Include the next digit (9) from the dividend after 300, then repeat: 3009 / 609

Going ahead to step 5:
3009 divided by 609 is 4 with a remainder of 573.
The next digit of our result is 4. 
Result so far: 74.0
Subtracting 2436 from 3009 leaves us with 573.
Grab the next digit (6) from the dividend, add it to 573, then carry on: 5736 / 609

Moving on to step 6:
609 goes into 5736 9 times with a remainder of 255.
Put 9 as the next digit of the answer. 
Result so far: 749.0
Deduct 5481 from 5736 and we're left with 255.
Grab the next digit (8) from the dividend, add it to 255, then carry on: 2558 / 609

Going ahead to step 7:
The number 609 fits into 2558 4 times, leaving a remainder of 122.
Write down 4 as next digit of the result. 
Result so far: 7494.0
If we subtract 2436 from 2558, we get 122.
Append the next digit (7) from the dividend to 122 and continue with: 1227 / 609

Step 8:
609 can be fit into 1227 2 times, resulting in a remainder of 9.
Record the quotient 2 as the next digit in the result. 
Result so far: 74942.0
If we subtract 1218 from 1227, we get 9.
Since there are no more digits in the dividend, we add a zero to the remainder making it 90, and continue the process.

Moving on to step 9:
If we divide 90 by 609, we get 0 and a remainder of 90.
Record the quotient 0 as the next digit in the result. 
Result so far: 74942.0
If we take 0 away from 90, we end up with 90.
Since there are no more digits in the dividend, we add a zero to the remainder making it 900, and continue the process.

Step 10:
If we divide 900 by 609, we get 1 and a remainder of 291.
The next digit of our result is 1. 
Result so far: 74942.01
If we subtract 609 from 900, we get 291.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2910, and continue the process.

Step 11:
609 goes into 2910 4 times with a remainder of 474.
The next digit of our result is 4. 
Result so far: 74942.014
The remainder is 474 after subtracting 2436 from 2910.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4740, and continue the process.

Going ahead to step 12:
When dividing 4740 by 609, we get 7 with a remainder of 477.
Record the quotient 7 as the next digit in the result. 
Result so far: 74942.0147
If we take 4263 away from 4740, we end up with 477.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4770, and continue the process.

Moving on to step 13:
If we divide 4770 by 609, we get 7 and a remainder of 507.
Record the quotient 7 as the next digit in the result. 
Result so far: 74942.01477
Subtracting 4263 from 4770 leaves us with 507.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5070, and continue the process.

After the division, we end up with 74942.01477 and a remainder of 0.000507.