64186431 divided by 911 
We're looking to find how many times 911 goes into 64186431.

Step 1:
911 goes into 6 0 times with a remainder of 6.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 6, we end up with 6.
Append the next digit (4) from the dividend to 6 and continue with: 64 / 911

On to step 2:
911 can be fit into 64 0 times, resulting in a remainder of 64.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 64, we end up with 64.
Include the next digit (1) from the dividend after 64, then repeat: 641 / 911

Step 3:
911 can be fit into 641 0 times, resulting in a remainder of 641.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 641, we end up with 641.
Take the next digit (8) from the dividend and append it to 641, then repeat: 6418 / 911

Advancing to step 4:
6418 divided by 911 is 7 with a remainder of 41.
The next digit of our result is 7. 
Result so far: 7.0
Subtract 6377 from 6418 to get 41.
Grab the next digit (6) from the dividend, add it to 41, then carry on: 416 / 911

Step 5:
911 goes into 416 0 times with a remainder of 416.
Use 0 as the next digit of our solution. 
Result so far: 70.0
Deduct 0 from 416 and we're left with 416.
Append the next digit (4) from the dividend to 416 and continue with: 4164 / 911

Moving on to step 6:
When dividing 4164 by 911, we get 4 with a remainder of 520.
Record the quotient 4 as the next digit in the result. 
Result so far: 704.0
The remainder is 520 after subtracting 3644 from 4164.
Grab the next digit (3) from the dividend, add it to 520, then carry on: 5203 / 911

Moving on to step 7:
911 goes into 5203 5 times with a remainder of 648.
Put 5 as the next digit of the answer. 
Result so far: 7045.0
Subtract 4555 from 5203 to get 648.
Fetch the next digit (1) from the dividend, attach it to 648 and continue: 6481 / 911

Let's proceed to step 8:
When dividing 6481 by 911, we get 7 with a remainder of 104.
Write down 7 as next digit of the result. 
Result so far: 70457.0
The remainder is 104 after subtracting 6377 from 6481.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1040, and continue the process.

Step 9:
If we divide 1040 by 911, we get 1 and a remainder of 129.
Put 1 as the next digit of the answer. 
Result so far: 70457.1
Subtract 911 from 1040 to get 129.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1290, and continue the process.

Going ahead to step 10:
911 goes into 1290 1 times with a remainder of 379.
Use 1 as the next digit of our solution. 
Result so far: 70457.11
Subtracting 911 from 1290 leaves us with 379.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3790, and continue the process.

The final outcome is 70457.11, with a leftover of 0.379.