Let's divide 64196009 by 400
We want to figure out the number of times 64196009 can be divided by 400.

On to step 1:
400 can be fit into 6 0 times, resulting in a remainder of 6.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 6, we get 6.
Take the next digit (4) from the dividend and append it to 6, then repeat: 64 / 400

Moving on to step 2:
64 divided by 400 is 0 with a remainder of 64.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 64 leaves us with 64.
Fetch the next digit (1) from the dividend, attach it to 64 and continue: 641 / 400

Going ahead to step 3:
641 divided by 400 is 1 with a remainder of 241.
The next digit of our result is 1. 
Result so far: 1.0
Subtract 400 from 641 to get 241.
Fetch the next digit (9) from the dividend, attach it to 241 and continue: 2419 / 400

Going ahead to step 4:
400 can be fit into 2419 6 times, resulting in a remainder of 19.
The next digit of our result is 6. 
Result so far: 16.0
If we take 2400 away from 2419, we end up with 19.
Append the next digit (6) from the dividend to 19 and continue with: 196 / 400

Step 5:
If we divide 196 by 400, we get 0 and a remainder of 196.
The next digit of our result is 0. 
Result so far: 160.0
The remainder is 196 after subtracting 0 from 196.
Bring next digit (0) of the dividend behind the 196 and repeat the process: 1960 / 400

Advancing to step 6:
If we divide 1960 by 400, we get 4 and a remainder of 360.
Put 4 as the next digit of the answer. 
Result so far: 1604.0
If we subtract 1600 from 1960, we get 360.
Fetch the next digit (0) from the dividend, attach it to 360 and continue: 3600 / 400

Step 7:
3600 divided by 400 is 9 with a remainder of 0.
Record the quotient 9 as the next digit in the result. 
Result so far: 16049.0
Subtract 3600 from 3600 to get 0.
Take the next digit (9) from the dividend and append it to 0, then repeat: 9 / 400

Let's proceed to step 8:
400 goes into 9 0 times with a remainder of 9.
Put 0 as the next digit of the answer. 
Result so far: 160490.0
The remainder is 9 after subtracting 0 from 9.
Since there are no more digits in the dividend, we add a zero to the remainder making it 90, and continue the process.

Moving on to step 9:
When dividing 90 by 400, we get 0 with a remainder of 90.
Use 0 as the next digit of our solution. 
Result so far: 160490.0
Subtract 0 from 90 to get 90.
Since there are no more digits in the dividend, we add a zero to the remainder making it 900, and continue the process.

On to step 10:
900 divided by 400 is 2 with a remainder of 100.
Record the quotient 2 as the next digit in the result. 
Result so far: 160490.02
Deduct 800 from 900 and we're left with 100.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1000, and continue the process.

Step 11:
If we divide 1000 by 400, we get 2 and a remainder of 200.
Write down 2 as next digit of the result. 
Result so far: 160490.022
If we subtract 800 from 1000, we get 200.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2000, and continue the process.

The final outcome is 160490.022, with a leftover of 0.02.