9101964 ÷ 578 
We want to figure out the number of times 9101964 can be divided by 578.

Let's proceed to step 1:
When dividing 9 by 578, we get 0 with a remainder of 9.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 9 to get 9.
Append the next digit (1) from the dividend to 9 and continue with: 91 / 578

Moving on to step 2:
578 goes into 91 0 times with a remainder of 91.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 91 leaves us with 91.
Grab the next digit (0) from the dividend, add it to 91, then carry on: 910 / 578

Step 3:
910 divided by 578 is 1 with a remainder of 332.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
If we take 578 away from 910, we end up with 332.
Fetch the next digit (1) from the dividend, attach it to 332 and continue: 3321 / 578

Step 4:
The number 578 fits into 3321 5 times, leaving a remainder of 431.
Write down 5 as next digit of the result. 
Result so far: 15.0
The remainder is 431 after subtracting 2890 from 3321.
Append the next digit (9) from the dividend to 431 and continue with: 4319 / 578

Let's proceed to step 5:
4319 divided by 578 is 7 with a remainder of 273.
The number 7 becomes the next digit in our result. 
Result so far: 157.0
The remainder is 273 after subtracting 4046 from 4319.
Fetch the next digit (6) from the dividend, attach it to 273 and continue: 2736 / 578

On to step 6:
578 goes into 2736 4 times with a remainder of 424.
The number 4 becomes the next digit in our result. 
Result so far: 1574.0
The remainder is 424 after subtracting 2312 from 2736.
Bring next digit (4) of the dividend behind the 424 and repeat the process: 4244 / 578

Going ahead to step 7:
4244 divided by 578 is 7 with a remainder of 198.
Write down 7 as next digit of the result. 
Result so far: 15747.0
Deduct 4046 from 4244 and we're left with 198.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1980, and continue the process.

Let's proceed to step 8:
1980 divided by 578 is 3 with a remainder of 246.
Put 3 as the next digit of the answer. 
Result so far: 15747.3
If we subtract 1734 from 1980, we get 246.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2460, and continue the process.

Let's proceed to step 9:
When dividing 2460 by 578, we get 4 with a remainder of 148.
Put 4 as the next digit of the answer. 
Result so far: 15747.34
Subtract 2312 from 2460 to get 148.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1480, and continue the process.

Advancing to step 10:
When dividing 1480 by 578, we get 2 with a remainder of 324.
Record the quotient 2 as the next digit in the result. 
Result so far: 15747.342
The remainder is 324 after subtracting 1156 from 1480.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3240, and continue the process.

Step 11:
578 can be fit into 3240 5 times, resulting in a remainder of 350.
The number 5 becomes the next digit in our result. 
Result so far: 15747.3425
Subtracting 2890 from 3240 leaves us with 350.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3500, and continue the process.

Let's proceed to step 12:
3500 divided by 578 is 6 with a remainder of 32.
The next digit of our result is 6. 
Result so far: 15747.34256
The remainder is 32 after subtracting 3468 from 3500.
Since there are no more digits in the dividend, we add a zero to the remainder making it 320, and continue the process.

Step 13:
The number 578 fits into 320 0 times, leaving a remainder of 320.
The next digit of our result is 0. 
Result so far: 15747.34256
The remainder is 320 after subtracting 0 from 320.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3200, and continue the process.

Advancing to step 14:
3200 divided by 578 is 5 with a remainder of 310.
The next digit of our result is 5. 
Result so far: 15747.3425605
The remainder is 310 after subtracting 2890 from 3200.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3100, and continue the process.

Step 15:
When dividing 3100 by 578, we get 5 with a remainder of 210.
Put 5 as the next digit of the answer. 
Result so far: 15747.34256055
The remainder is 210 after subtracting 2890 from 3100.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2100, and continue the process.

After the division, we end up with 15747.34256055 and a remainder of 2.1e-07.