We're dividing 99644316 by 159 
We want to divide 99644316 by 159.

Advancing to step 1:
The number 159 fits into 9 0 times, leaving a remainder of 9.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 9, we get 9.
Bring next digit (9) of the dividend behind the 9 and repeat the process: 99 / 159

Going ahead to step 2:
When dividing 99 by 159, we get 0 with a remainder of 99.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 99 leaves us with 99.
Grab the next digit (6) from the dividend, add it to 99, then carry on: 996 / 159

Going ahead to step 3:
If we divide 996 by 159, we get 6 and a remainder of 42.
The next digit of our result is 6. 
Result so far: 6.0
Deduct 954 from 996 and we're left with 42.
Bring next digit (4) of the dividend behind the 42 and repeat the process: 424 / 159

Let's proceed to step 4:
The number 159 fits into 424 2 times, leaving a remainder of 106.
Record the quotient 2 as the next digit in the result. 
Result so far: 62.0
If we subtract 318 from 424, we get 106.
Bring next digit (4) of the dividend behind the 106 and repeat the process: 1064 / 159

Advancing to step 5:
159 goes into 1064 6 times with a remainder of 110.
Put 6 as the next digit of the answer. 
Result so far: 626.0
Subtract 954 from 1064 to get 110.
Take the next digit (3) from the dividend and append it to 110, then repeat: 1103 / 159

Going ahead to step 6:
1103 divided by 159 is 6 with a remainder of 149.
The next digit of our result is 6. 
Result so far: 6266.0
Subtracting 954 from 1103 leaves us with 149.
Append the next digit (1) from the dividend to 149 and continue with: 1491 / 159

Let's proceed to step 7:
1491 divided by 159 is 9 with a remainder of 60.
The next digit of our result is 9. 
Result so far: 62669.0
If we take 1431 away from 1491, we end up with 60.
Take the next digit (6) from the dividend and append it to 60, then repeat: 606 / 159

Moving on to step 8:
606 divided by 159 is 3 with a remainder of 129.
Put 3 as the next digit of the answer. 
Result so far: 626693.0
Deduct 477 from 606 and we're left with 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 9:
The number 159 fits into 1290 8 times, leaving a remainder of 18.
The number 8 becomes the next digit in our result. 
Result so far: 626693.8
If we subtract 1272 from 1290, we get 18.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

Moving on to step 10:
If we divide 180 by 159, we get 1 and a remainder of 21.
The next digit of our result is 1. 
Result so far: 626693.81
If we subtract 159 from 180, we get 21.
Since there are no more digits in the dividend, we add a zero to the remainder making it 210, and continue the process.

Moving on to step 11:
The number 159 fits into 210 1 times, leaving a remainder of 51.
Write down 1 as next digit of the result. 
Result so far: 626693.811
If we subtract 159 from 210, we get 51.
Since there are no more digits in the dividend, we add a zero to the remainder making it 510, and continue the process.

In conclusion, the division gives 626693.811 with a balance of 0.0051.