642413 ÷ 1 
We're looking to find how many times 1 goes into 642413.

Step 1:
6 divided by 1 is 6 with a remainder of 0.
The number 6 becomes the next digit in our result. 
Result so far: 6.0
The remainder is 0 after subtracting 6 from 6.
Grab the next digit (4) from the dividend, add it to 0, then carry on: 4 / 1

Step 2:
The number 1 fits into 4 4 times, leaving a remainder of 0.
The number 4 becomes the next digit in our result. 
Result so far: 64.0
Subtract 4 from 4 to get 0.
Append the next digit (2) from the dividend to 0 and continue with: 2 / 1

Moving on to step 3:
1 goes into 2 2 times with a remainder of 0.
The next digit of our result is 2. 
Result so far: 642.0
Subtracting 2 from 2 leaves us with 0.
Take the next digit (4) from the dividend and append it to 0, then repeat: 4 / 1

Let's proceed to step 4:
When dividing 4 by 1, we get 4 with a remainder of 0.
The number 4 becomes the next digit in our result. 
Result so far: 6424.0
The remainder is 0 after subtracting 4 from 4.
Bring next digit (1) of the dividend behind the 0 and repeat the process: 1 / 1

Advancing to step 5:
1 divided by 1 is 1 with a remainder of 0.
The next digit of our result is 1. 
Result so far: 64241.0
Deduct 1 from 1 and we're left with 0.
Grab the next digit (3) from the dividend, add it to 0, then carry on: 3 / 1

Advancing to step 6:
If we divide 3 by 1, we get 3 and a remainder of 0.
Record the quotient 3 as the next digit in the result. 
Result so far: 642413.0
Deduct 3 from 3 and we're left with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Moving on to step 7:
When dividing 0 by 1, we get 0 with a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 642413.0
If we take 0 away from 0, we end up with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Advancing to step 8:
1 goes into 0 0 times with a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 642413.0
Deduct 0 from 0 and we're left with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

The final outcome is 642413.0, with a leftover of 0.0.