We're dividing 450146 by 60 
Let's see how many times 60 fits into 450146.

Advancing to step 1:
60 can be fit into 4 0 times, resulting in a remainder of 4.
Write down 0 as next digit of the result. 
Result so far: 0.0
The remainder is 4 after subtracting 0 from 4.
Take the next digit (5) from the dividend and append it to 4, then repeat: 45 / 60

Let's proceed to step 2:
When dividing 45 by 60, we get 0 with a remainder of 45.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 45 leaves us with 45.
Fetch the next digit (0) from the dividend, attach it to 45 and continue: 450 / 60

Moving on to step 3:
If we divide 450 by 60, we get 7 and a remainder of 30.
Record the quotient 7 as the next digit in the result. 
Result so far: 7.0
Deduct 420 from 450 and we're left with 30.
Include the next digit (1) from the dividend after 30, then repeat: 301 / 60

Moving on to step 4:
When dividing 301 by 60, we get 5 with a remainder of 1.
The number 5 becomes the next digit in our result. 
Result so far: 75.0
Subtracting 300 from 301 leaves us with 1.
Include the next digit (4) from the dividend after 1, then repeat: 14 / 60

Advancing to step 5:
The number 60 fits into 14 0 times, leaving a remainder of 14.
The number 0 becomes the next digit in our result. 
Result so far: 750.0
If we take 0 away from 14, we end up with 14.
Fetch the next digit (6) from the dividend, attach it to 14 and continue: 146 / 60

On to step 6:
146 divided by 60 is 2 with a remainder of 26.
Write down 2 as next digit of the result. 
Result so far: 7502.0
Subtracting 120 from 146 leaves us 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.

On to step 7:
The number 60 fits into 260 4 times, leaving a remainder of 20.
The number 4 becomes the next digit in our result. 
Result so far: 7502.4
If we take 240 away from 260, we end up with 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Going ahead to step 8:
When dividing 200 by 60, we get 3 with a remainder of 20.
Use 3 as the next digit of our solution. 
Result so far: 7502.43
The remainder is 20 after subtracting 180 from 200.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Moving on to step 9:
If we divide 200 by 60, we get 3 and a remainder of 20.
Record the quotient 3 as the next digit in the result. 
Result so far: 7502.433
If we take 180 away from 200, we end up with 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

The final outcome is 7502.433, with a leftover of 0.002.