78523948 ÷ 409 
Let's see how many times 409 fits into 78523948.

Advancing to step 1:
7 divided by 409 is 0 with a remainder of 7.
Use 0 as the next digit of our solution. 
Result so far: 0.0
The remainder is 7 after subtracting 0 from 7.
Take the next digit (8) from the dividend and append it to 7, then repeat: 78 / 409

Going ahead to step 2:
When dividing 78 by 409, we get 0 with a remainder of 78.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 78 and we're left with 78.
Take the next digit (5) from the dividend and append it to 78, then repeat: 785 / 409

Step 3:
409 goes into 785 1 times with a remainder of 376.
Put 1 as the next digit of the answer. 
Result so far: 1.0
If we take 409 away from 785, we end up with 376.
Fetch the next digit (2) from the dividend, attach it to 376 and continue: 3762 / 409

Advancing to step 4:
If we divide 3762 by 409, we get 9 and a remainder of 81.
The number 9 becomes the next digit in our result. 
Result so far: 19.0
The remainder is 81 after subtracting 3681 from 3762.
Grab the next digit (3) from the dividend, add it to 81, then carry on: 813 / 409

Let's proceed to step 5:
The number 409 fits into 813 1 times, leaving a remainder of 404.
Write down 1 as next digit of the result. 
Result so far: 191.0
Subtracting 409 from 813 leaves us with 404.
Fetch the next digit (9) from the dividend, attach it to 404 and continue: 4049 / 409

Step 6:
409 goes into 4049 9 times with a remainder of 368.
Use 9 as the next digit of our solution. 
Result so far: 1919.0
If we take 3681 away from 4049, we end up with 368.
Grab the next digit (4) from the dividend, add it to 368, then carry on: 3684 / 409

Going ahead to step 7:
409 can be fit into 3684 9 times, resulting in a remainder of 3.
The next digit of our result is 9. 
Result so far: 19199.0
Deduct 3681 from 3684 and we're left with 3.
Grab the next digit (8) from the dividend, add it to 3, then carry on: 38 / 409

Moving on to step 8:
409 can be fit into 38 0 times, resulting in a remainder of 38.
Write down 0 as next digit of the result. 
Result so far: 191990.0
Subtracting 0 from 38 leaves us with 38.
Since there are no more digits in the dividend, we add a zero to the remainder making it 380, and continue the process.

Moving on to step 9:
When dividing 380 by 409, we get 0 with a remainder of 380.
The next digit of our result is 0. 
Result so far: 191990.0
If we subtract 0 from 380, we get 380.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3800, and continue the process.

Moving on to step 10:
If we divide 3800 by 409, we get 9 and a remainder of 119.
Write down 9 as next digit of the result. 
Result so far: 191990.09
Subtract 3681 from 3800 to get 119.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1190, and continue the process.

Going ahead to step 11:
The number 409 fits into 1190 2 times, leaving a remainder of 372.
Put 2 as the next digit of the answer. 
Result so far: 191990.092
Subtracting 818 from 1190 leaves us with 372.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3720, and continue the process.

Let's proceed to step 12:
3720 divided by 409 is 9 with a remainder of 39.
Write down 9 as next digit of the result. 
Result so far: 191990.0929
If we subtract 3681 from 3720, we get 39.
Since there are no more digits in the dividend, we add a zero to the remainder making it 390, and continue the process.

Let's proceed to step 13:
When dividing 390 by 409, we get 0 with a remainder of 390.
The next digit of our result is 0. 
Result so far: 191990.0929
Subtracting 0 from 390 leaves us with 390.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3900, and continue the process.

Advancing to step 14:
3900 divided by 409 is 9 with a remainder of 219.
Put 9 as the next digit of the answer. 
Result so far: 191990.092909
If we take 3681 away from 3900, we end up with 219.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2190, and continue the process.

Advancing to step 15:
If we divide 2190 by 409, we get 5 and a remainder of 145.
Record the quotient 5 as the next digit in the result. 
Result so far: 191990.0929095
The remainder is 145 after subtracting 2045 from 2190.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1450, and continue the process.

Step 16:
409 can be fit into 1450 3 times, resulting in a remainder of 223.
Put 3 as the next digit of the answer. 
Result so far: 191990.09290953
If we take 1227 away from 1450, we end up with 223.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2230, and continue the process.

The final outcome is 191990.09290953, with a leftover of 2.23e-07.