We look at the division of 91978130 by 571 
We want to figure out the number of times 91978130 can be divided by 571.

On to step 1:
The number 571 fits into 9 0 times, leaving a remainder of 9.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 9 leaves us with 9.
Bring next digit (1) of the dividend behind the 9 and repeat the process: 91 / 571

On to step 2:
571 goes into 91 0 times with a remainder of 91.
Use 0 as the next digit of our solution. 
Result so far: 0.0
The remainder is 91 after subtracting 0 from 91.
Append the next digit (9) from the dividend to 91 and continue with: 919 / 571

Let's proceed to step 3:
571 can be fit into 919 1 times, resulting in a remainder of 348.
Write down 1 as next digit of the result. 
Result so far: 1.0
If we subtract 571 from 919, we get 348.
Bring next digit (7) of the dividend behind the 348 and repeat the process: 3487 / 571

Advancing to step 4:
If we divide 3487 by 571, we get 6 and a remainder of 61.
Record the quotient 6 as the next digit in the result. 
Result so far: 16.0
If we take 3426 away from 3487, we end up with 61.
Include the next digit (8) from the dividend after 61, then repeat: 618 / 571

Moving on to step 5:
571 goes into 618 1 times with a remainder of 47.
Use 1 as the next digit of our solution. 
Result so far: 161.0
If we subtract 571 from 618, we get 47.
Include the next digit (1) from the dividend after 47, then repeat: 471 / 571

Going ahead to step 6:
571 goes into 471 0 times with a remainder of 471.
Record the quotient 0 as the next digit in the result. 
Result so far: 1610.0
Subtract 0 from 471 to get 471.
Append the next digit (3) from the dividend to 471 and continue with: 4713 / 571

Moving on to step 7:
If we divide 4713 by 571, we get 8 and a remainder of 145.
Write down 8 as next digit of the result. 
Result so far: 16108.0
The remainder is 145 after subtracting 4568 from 4713.
Bring next digit (0) of the dividend behind the 145 and repeat the process: 1450 / 571

On to step 8:
If we divide 1450 by 571, we get 2 and a remainder of 308.
Put 2 as the next digit of the answer. 
Result so far: 161082.0
Subtract 1142 from 1450 to get 308.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3080, and continue the process.

Moving on to step 9:
When dividing 3080 by 571, we get 5 with a remainder of 225.
The number 5 becomes the next digit in our result. 
Result so far: 161082.5
If we subtract 2855 from 3080, we get 225.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2250, and continue the process.

Step 10:
571 goes into 2250 3 times with a remainder of 537.
Write down 3 as next digit of the result. 
Result so far: 161082.53
If we subtract 1713 from 2250, we get 537.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5370, and continue the process.

Going ahead to step 11:
If we divide 5370 by 571, we get 9 and a remainder of 231.
The number 9 becomes the next digit in our result. 
Result so far: 161082.539
Deduct 5139 from 5370 and we're left with 231.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2310, and continue the process.

Going ahead to step 12:
2310 divided by 571 is 4 with a remainder of 26.
Record the quotient 4 as the next digit in the result. 
Result so far: 161082.5394
If we take 2284 away from 2310, we end up with 26.
Since there are no more digits in the dividend, we add a zero to the remainder making it 260, and continue the process.

Moving on to step 13:
571 can be fit into 260 0 times, resulting in a remainder of 260.
Use 0 as the next digit of our solution. 
Result so far: 161082.5394
Subtract 0 from 260 to get 260.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2600, and continue the process.

Advancing to step 14:
2600 divided by 571 is 4 with a remainder of 316.
Put 4 as the next digit of the answer. 
Result so far: 161082.539404
Deduct 2284 from 2600 and we're left with 316.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3160, and continue the process.

Step 15:
If we divide 3160 by 571, we get 5 and a remainder of 305.
Record the quotient 5 as the next digit in the result. 
Result so far: 161082.5394045
Subtracting 2855 from 3160 leaves us with 305.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3050, and continue the process.

Step 16:
If we divide 3050 by 571, we get 5 and a remainder of 195.
The number 5 becomes the next digit in our result. 
Result so far: 161082.53940455
Subtract 2855 from 3050 to get 195.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1950, and continue the process.

The final outcome is 161082.53940455, with a leftover of 1.95e-07.