18449279 ÷ 642 
We want to figure out the number of times 18449279 can be divided by 642.

Moving on to step 1:
When dividing 1 by 642, we get 0 with a remainder of 1.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 1 and we're left with 1.
Grab the next digit (8) from the dividend, add it to 1, then carry on: 18 / 642

Going ahead to step 2:
When dividing 18 by 642, we get 0 with a remainder of 18.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 18 to get 18.
Take the next digit (4) from the dividend and append it to 18, then repeat: 184 / 642

Advancing to step 3:
The number 642 fits into 184 0 times, leaving a remainder of 184.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 184 and we're left with 184.
Take the next digit (4) from the dividend and append it to 184, then repeat: 1844 / 642

Step 4:
The number 642 fits into 1844 2 times, leaving a remainder of 560.
Put 2 as the next digit of the answer. 
Result so far: 2.0
Subtract 1284 from 1844 to get 560.
Fetch the next digit (9) from the dividend, attach it to 560 and continue: 5609 / 642

Let's proceed to step 5:
642 goes into 5609 8 times with a remainder of 473.
Use 8 as the next digit of our solution. 
Result so far: 28.0
The remainder is 473 after subtracting 5136 from 5609.
Fetch the next digit (2) from the dividend, attach it to 473 and continue: 4732 / 642

Going ahead to step 6:
The number 642 fits into 4732 7 times, leaving a remainder of 238.
Record the quotient 7 as the next digit in the result. 
Result so far: 287.0
Deduct 4494 from 4732 and we're left with 238.
Grab the next digit (7) from the dividend, add it to 238, then carry on: 2387 / 642

Moving on to step 7:
If we divide 2387 by 642, we get 3 and a remainder of 461.
Record the quotient 3 as the next digit in the result. 
Result so far: 2873.0
If we subtract 1926 from 2387, we get 461.
Bring next digit (9) of the dividend behind the 461 and repeat the process: 4619 / 642

Going ahead to step 8:
642 can be fit into 4619 7 times, resulting in a remainder of 125.
Use 7 as the next digit of our solution. 
Result so far: 28737.0
The remainder is 125 after subtracting 4494 from 4619.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1250, and continue the process.

Going ahead to step 9:
If we divide 1250 by 642, we get 1 and a remainder of 608.
The next digit of our result is 1. 
Result so far: 28737.1
Deduct 642 from 1250 and we're left with 608.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6080, and continue the process.

Let's proceed to step 10:
6080 divided by 642 is 9 with a remainder of 302.
The number 9 becomes the next digit in our result. 
Result so far: 28737.19
Deduct 5778 from 6080 and we're left with 302.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3020, and continue the process.

Going ahead to step 11:
642 can be fit into 3020 4 times, resulting in a remainder of 452.
Record the quotient 4 as the next digit in the result. 
Result so far: 28737.194
The remainder is 452 after subtracting 2568 from 3020.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4520, and continue the process.

Advancing to step 12:
If we divide 4520 by 642, we get 7 and a remainder of 26.
Use 7 as the next digit of our solution. 
Result so far: 28737.1947
If we take 4494 away from 4520, we end up with 26.
Since there are no more digits in the dividend, we add a zero to the remainder making it 260, and continue the process.

Moving on to step 13:
260 divided by 642 is 0 with a remainder of 260.
Record the quotient 0 as the next digit in the result. 
Result so far: 28737.1947
Deduct 0 from 260 and we're left with 260.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2600, and continue the process.

Step 14:
642 can be fit into 2600 4 times, resulting in a remainder of 32.
Write down 4 as next digit of the result. 
Result so far: 28737.194704
Subtracting 2568 from 2600 leaves us with 32.
Since there are no more digits in the dividend, we add a zero to the remainder making it 320, and continue the process.

On to step 15:
When dividing 320 by 642, we get 0 with a remainder of 320.
Use 0 as the next digit of our solution. 
Result so far: 28737.194704
If we take 0 away from 320, we end up with 320.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3200, and continue the process.

Advancing to step 16:
642 goes into 3200 4 times with a remainder of 632.
Write down 4 as next digit of the result. 
Result so far: 28737.19470404
Subtracting 2568 from 3200 leaves us with 632.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6320, and continue the process.

The final outcome is 28737.19470404, with a leftover of 6.32e-07.