661010 ÷ 4 
We want to divide 661010 by 4.

Step 1:
The number 4 fits into 6 1 times, leaving a remainder of 2.
Write down 1 as next digit of the result. 
Result so far: 1.0
If we subtract 4 from 6, we get 2.
Include the next digit (6) from the dividend after 2, then repeat: 26 / 4

On to step 2:
If we divide 26 by 4, we get 6 and a remainder of 2.
Put 6 as the next digit of the answer. 
Result so far: 16.0
If we subtract 24 from 26, we get 2.
Grab the next digit (1) from the dividend, add it to 2, then carry on: 21 / 4

Step 3:
When dividing 21 by 4, we get 5 with a remainder of 1.
The next digit of our result is 5. 
Result so far: 165.0
Deduct 20 from 21 and we're left with 1.
Grab the next digit (0) from the dividend, add it to 1, then carry on: 10 / 4

Let's proceed to step 4:
When dividing 10 by 4, we get 2 with a remainder of 2.
Write down 2 as next digit of the result. 
Result so far: 1652.0
Deduct 8 from 10 and we're left with 2.
Take the next digit (1) from the dividend and append it to 2, then repeat: 21 / 4

Advancing to step 5:
4 goes into 21 5 times with a remainder of 1.
The number 5 becomes the next digit in our result. 
Result so far: 16525.0
The remainder is 1 after subtracting 20 from 21.
Bring next digit (0) of the dividend behind the 1 and repeat the process: 10 / 4

On to step 6:
4 can be fit into 10 2 times, resulting in a remainder of 2.
Use 2 as the next digit of our solution. 
Result so far: 165252.0
If we take 8 away from 10, we end up with 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

On to step 7:
The number 4 fits into 20 5 times, leaving a remainder of 0.
Put 5 as the next digit of the answer. 
Result so far: 165252.5
The remainder is 0 after subtracting 20 from 20.
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 8:
When dividing 0 by 4, we get 0 with a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 165252.5
If we subtract 0 from 0, we get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Let's proceed to step 9:
When dividing 0 by 4, we get 0 with a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 165252.5
The remainder is 0 after subtracting 0 from 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 165252.5, with a leftover of 0.0.