49578354 ÷ 521 
We want to figure out the number of times 49578354 can be divided by 521.

Going ahead to step 1:
521 goes into 4 0 times with a remainder of 4.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 4 to get 4.
Fetch the next digit (9) from the dividend, attach it to 4 and continue: 49 / 521

Step 2:
49 divided by 521 is 0 with a remainder of 49.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 49, we end up with 49.
Fetch the next digit (5) from the dividend, attach it to 49 and continue: 495 / 521

Step 3:
When dividing 495 by 521, we get 0 with a remainder of 495.
The next digit of our result is 0. 
Result so far: 0.0
The remainder is 495 after subtracting 0 from 495.
Fetch the next digit (7) from the dividend, attach it to 495 and continue: 4957 / 521

Moving on to step 4:
521 can be fit into 4957 9 times, resulting in a remainder of 268.
The number 9 becomes the next digit in our result. 
Result so far: 9.0
If we subtract 4689 from 4957, we get 268.
Fetch the next digit (8) from the dividend, attach it to 268 and continue: 2688 / 521

Step 5:
2688 divided by 521 is 5 with a remainder of 83.
Record the quotient 5 as the next digit in the result. 
Result so far: 95.0
Subtracting 2605 from 2688 leaves us with 83.
Append the next digit (3) from the dividend to 83 and continue with: 833 / 521

Going ahead to step 6:
The number 521 fits into 833 1 times, leaving a remainder of 312.
The number 1 becomes the next digit in our result. 
Result so far: 951.0
If we take 521 away from 833, we end up with 312.
Grab the next digit (5) from the dividend, add it to 312, then carry on: 3125 / 521

On to step 7:
521 can be fit into 3125 5 times, resulting in a remainder of 520.
Use 5 as the next digit of our solution. 
Result so far: 9515.0
If we subtract 2605 from 3125, we get 520.
Bring next digit (4) of the dividend behind the 520 and repeat the process: 5204 / 521

Step 8:
If we divide 5204 by 521, we get 9 and a remainder of 515.
Put 9 as the next digit of the answer. 
Result so far: 95159.0
The remainder is 515 after subtracting 4689 from 5204.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5150, and continue the process.

Going ahead to step 9:
When dividing 5150 by 521, we get 9 with a remainder of 461.
Put 9 as the next digit of the answer. 
Result so far: 95159.9
Subtracting 4689 from 5150 leaves us with 461.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4610, and continue the process.

Advancing to step 10:
If we divide 4610 by 521, we get 8 and a remainder of 442.
Record the quotient 8 as the next digit in the result. 
Result so far: 95159.98
The remainder is 442 after subtracting 4168 from 4610.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4420, and continue the process.

Moving on to step 11:
521 goes into 4420 8 times with a remainder of 252.
Put 8 as the next digit of the answer. 
Result so far: 95159.988
The remainder is 252 after subtracting 4168 from 4420.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2520, and continue the process.

The final result is 95159.988 with a remainder of 0.0252.