We're dividing 45042289 by 642 
We want to figure out the number of times 45042289 can be divided by 642.

Advancing to step 1:
4 divided by 642 is 0 with a remainder of 4.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 4, we get 4.
Take the next digit (5) from the dividend and append it to 4, then repeat: 45 / 642

Moving on to step 2:
642 goes into 45 0 times with a remainder of 45.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 45 and we're left with 45.
Fetch the next digit (0) from the dividend, attach it to 45 and continue: 450 / 642

Going ahead to step 3:
642 can be fit into 450 0 times, resulting in a remainder of 450.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 450 to get 450.
Fetch the next digit (4) from the dividend, attach it to 450 and continue: 4504 / 642

Let's proceed to step 4:
4504 divided by 642 is 7 with a remainder of 10.
Use 7 as the next digit of our solution. 
Result so far: 7.0
Subtracting 4494 from 4504 leaves us with 10.
Bring next digit (2) of the dividend behind the 10 and repeat the process: 102 / 642

Going ahead to step 5:
When dividing 102 by 642, we get 0 with a remainder of 102.
The next digit of our result is 0. 
Result so far: 70.0
Deduct 0 from 102 and we're left with 102.
Include the next digit (2) from the dividend after 102, then repeat: 1022 / 642

Going ahead to step 6:
1022 divided by 642 is 1 with a remainder of 380.
The next digit of our result is 1. 
Result so far: 701.0
If we subtract 642 from 1022, we get 380.
Fetch the next digit (8) from the dividend, attach it to 380 and continue: 3808 / 642

Step 7:
The number 642 fits into 3808 5 times, leaving a remainder of 598.
The next digit of our result is 5. 
Result so far: 7015.0
If we take 3210 away from 3808, we end up with 598.
Append the next digit (9) from the dividend to 598 and continue with: 5989 / 642

On to step 8:
642 can be fit into 5989 9 times, resulting in a remainder of 211.
Put 9 as the next digit of the answer. 
Result so far: 70159.0
The remainder is 211 after subtracting 5778 from 5989.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2110, and continue the process.

Let's proceed to step 9:
When dividing 2110 by 642, we get 3 with a remainder of 184.
The number 3 becomes the next digit in our result. 
Result so far: 70159.3
Deduct 1926 from 2110 and we're left with 184.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1840, and continue the process.

On to step 10:
The number 642 fits into 1840 2 times, leaving a remainder of 556.
Record the quotient 2 as the next digit in the result. 
Result so far: 70159.32
Deduct 1284 from 1840 and we're left with 556.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5560, and continue the process.

Let's proceed to step 11:
The number 642 fits into 5560 8 times, leaving a remainder of 424.
Record the quotient 8 as the next digit in the result. 
Result so far: 70159.328
If we subtract 5136 from 5560, we get 424.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4240, and continue the process.

Advancing to step 12:
642 can be fit into 4240 6 times, resulting in a remainder of 388.
Use 6 as the next digit of our solution. 
Result so far: 70159.3286
Subtract 3852 from 4240 to get 388.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3880, and continue the process.

On to step 13:
The number 642 fits into 3880 6 times, leaving a remainder of 28.
The next digit of our result is 6. 
Result so far: 70159.32866
If we subtract 3852 from 3880, we get 28.
Since there are no more digits in the dividend, we add a zero to the remainder making it 280, and continue the process.

After the division, we end up with 70159.32866 and a remainder of 2.8e-05.