We're dividing 61640 by 4 
We're looking to find how many times 4 goes into 61640.

Let's proceed to step 1:
The number 4 fits into 6 1 times, leaving a remainder of 2.
The next digit of our result is 1. 
Result so far: 1.0
The remainder is 2 after subtracting 4 from 6.
Take the next digit (1) from the dividend and append it to 2, then repeat: 21 / 4

Step 2:
4 can be fit into 21 5 times, resulting in a remainder of 1.
Use 5 as the next digit of our solution. 
Result so far: 15.0
Subtract 20 from 21 to get 1.
Take the next digit (6) from the dividend and append it to 1, then repeat: 16 / 4

Advancing to step 3:
16 divided by 4 is 4 with a remainder of 0.
Put 4 as the next digit of the answer. 
Result so far: 154.0
The remainder is 0 after subtracting 16 from 16.
Bring next digit (4) of the dividend behind the 0 and repeat the process: 4 / 4

On to step 4:
When dividing 4 by 4, we get 1 with a remainder of 0.
Record the quotient 1 as the next digit in the result. 
Result so far: 1541.0
Deduct 4 from 4 and we're left with 0.
Grab the next digit (0) from the dividend, add it to 0, then carry on: 0 / 4

Let's proceed to step 5:
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: 15410.0
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.

Let's proceed to step 6:
4 goes into 0 0 times with a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 15410.0
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.

On to step 7:
4 can be fit into 0 0 times, resulting in a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 15410.0
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.

The final outcome is 15410.0, with a leftover of 0.0.