We divide 420860 by 75
We want to figure out the number of times 420860 can be divided by 75.

Going ahead to step 1:
When dividing 4 by 75, we get 0 with a remainder of 4.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we subtract 0 from 4, we get 4.
Take the next digit (2) from the dividend and append it to 4, then repeat: 42 / 75

Let's proceed to step 2:
75 can be fit into 42 0 times, resulting in a remainder of 42.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 42 and we're left with 42.
Take the next digit (0) from the dividend and append it to 42, then repeat: 420 / 75

On to step 3:
75 goes into 420 5 times with a remainder of 45.
The next digit of our result is 5. 
Result so far: 5.0
If we take 375 away from 420, we end up with 45.
Take the next digit (8) from the dividend and append it to 45, then repeat: 458 / 75

Step 4:
If we divide 458 by 75, we get 6 and a remainder of 8.
Use 6 as the next digit of our solution. 
Result so far: 56.0
The remainder is 8 after subtracting 450 from 458.
Bring next digit (6) of the dividend behind the 8 and repeat the process: 86 / 75

Moving on to step 5:
The number 75 fits into 86 1 times, leaving a remainder of 11.
Record the quotient 1 as the next digit in the result. 
Result so far: 561.0
If we take 75 away from 86, we end up with 11.
Bring next digit (0) of the dividend behind the 11 and repeat the process: 110 / 75

Going ahead to step 6:
75 goes into 110 1 times with a remainder of 35.
Record the quotient 1 as the next digit in the result. 
Result so far: 5611.0
If we take 75 away from 110, we end up with 35.
Since there are no more digits in the dividend, we add a zero to the remainder making it 350, and continue the process.

Moving on to step 7:
75 can be fit into 350 4 times, resulting in a remainder of 50.
Record the quotient 4 as the next digit in the result. 
Result so far: 5611.4
The remainder is 50 after subtracting 300 from 350.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

Advancing to step 8:
75 can be fit into 500 6 times, resulting in a remainder of 50.
Put 6 as the next digit of the answer. 
Result so far: 5611.46
If we take 450 away from 500, we end up with 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

Let's proceed to step 9:
When dividing 500 by 75, we get 6 with a remainder of 50.
The number 6 becomes the next digit in our result. 
Result so far: 5611.466
Subtract 450 from 500 to get 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

The final outcome is 5611.466, with a leftover of 0.005.