18407938 ÷ 629 
We want to divide 18407938 by 629.

On to step 1:
When dividing 1 by 629, we get 0 with a remainder of 1.
The next digit of our result is 0. 
Result so far: 0.0
Subtract 0 from 1 to get 1.
Grab the next digit (8) from the dividend, add it to 1, then carry on: 18 / 629

Step 2:
18 divided by 629 is 0 with a remainder of 18.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we subtract 0 from 18, we get 18.
Bring next digit (4) of the dividend behind the 18 and repeat the process: 184 / 629

Advancing to step 3:
If we divide 184 by 629, we get 0 and a remainder of 184.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 184 leaves us with 184.
Bring next digit (0) of the dividend behind the 184 and repeat the process: 1840 / 629

Advancing to step 4:
The number 629 fits into 1840 2 times, leaving a remainder of 582.
Use 2 as the next digit of our solution. 
Result so far: 2.0
If we take 1258 away from 1840, we end up with 582.
Fetch the next digit (7) from the dividend, attach it to 582 and continue: 5827 / 629

Step 5:
629 can be fit into 5827 9 times, resulting in a remainder of 166.
Record the quotient 9 as the next digit in the result. 
Result so far: 29.0
Subtracting 5661 from 5827 leaves us with 166.
Fetch the next digit (9) from the dividend, attach it to 166 and continue: 1669 / 629

On to step 6:
If we divide 1669 by 629, we get 2 and a remainder of 411.
Record the quotient 2 as the next digit in the result. 
Result so far: 292.0
Subtract 1258 from 1669 to get 411.
Take the next digit (3) from the dividend and append it to 411, then repeat: 4113 / 629

Going ahead to step 7:
If we divide 4113 by 629, we get 6 and a remainder of 339.
The next digit of our result is 6. 
Result so far: 2926.0
Subtracting 3774 from 4113 leaves us with 339.
Bring next digit (8) of the dividend behind the 339 and repeat the process: 3398 / 629

Moving on to step 8:
629 can be fit into 3398 5 times, resulting in a remainder of 253.
Record the quotient 5 as the next digit in the result. 
Result so far: 29265.0
Subtract 3145 from 3398 to get 253.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2530, and continue the process.

Moving on to step 9:
629 can be fit into 2530 4 times, resulting in a remainder of 14.
The next digit of our result is 4. 
Result so far: 29265.4
If we subtract 2516 from 2530, we get 14.
Since there are no more digits in the dividend, we add a zero to the remainder making it 140, and continue the process.

Step 10:
If we divide 140 by 629, we get 0 and a remainder of 140.
Put 0 as the next digit of the answer. 
Result so far: 29265.4
Subtracting 0 from 140 leaves us with 140.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1400, and continue the process.

Let's proceed to step 11:
The number 629 fits into 1400 2 times, leaving a remainder of 142.
The next digit of our result is 2. 
Result so far: 29265.402
If we take 1258 away from 1400, we end up with 142.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1420, and continue the process.

Going ahead to step 12:
629 can be fit into 1420 2 times, resulting in a remainder of 162.
The number 2 becomes the next digit in our result. 
Result so far: 29265.4022
If we take 1258 away from 1420, we end up with 162.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1620, and continue the process.

The final outcome is 29265.4022, with a leftover of 0.00162.