53999826 ÷ 404 
We're looking to find how many times 404 goes into 53999826.

Going ahead to step 1:
5 divided by 404 is 0 with a remainder of 5.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 5 and we're left with 5.
Grab the next digit (3) from the dividend, add it to 5, then carry on: 53 / 404

Let's proceed to step 2:
If we divide 53 by 404, we get 0 and a remainder of 53.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 53 to get 53.
Append the next digit (9) from the dividend to 53 and continue with: 539 / 404

On to step 3:
539 divided by 404 is 1 with a remainder of 135.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
If we take 404 away from 539, we end up with 135.
Append the next digit (9) from the dividend to 135 and continue with: 1359 / 404

On to step 4:
1359 divided by 404 is 3 with a remainder of 147.
The number 3 becomes the next digit in our result. 
Result so far: 13.0
If we subtract 1212 from 1359, we get 147.
Grab the next digit (9) from the dividend, add it to 147, then carry on: 1479 / 404

Going ahead to step 5:
404 can be fit into 1479 3 times, resulting in a remainder of 267.
The next digit of our result is 3. 
Result so far: 133.0
Deduct 1212 from 1479 and we're left with 267.
Fetch the next digit (8) from the dividend, attach it to 267 and continue: 2678 / 404

Moving on to step 6:
404 can be fit into 2678 6 times, resulting in a remainder of 254.
The number 6 becomes the next digit in our result. 
Result so far: 1336.0
If we take 2424 away from 2678, we end up with 254.
Bring next digit (2) of the dividend behind the 254 and repeat the process: 2542 / 404

Let's proceed to step 7:
The number 404 fits into 2542 6 times, leaving a remainder of 118.
The next digit of our result is 6. 
Result so far: 13366.0
The remainder is 118 after subtracting 2424 from 2542.
Bring next digit (6) of the dividend behind the 118 and repeat the process: 1186 / 404

Step 8:
404 goes into 1186 2 times with a remainder of 378.
The number 2 becomes the next digit in our result. 
Result so far: 133662.0
Deduct 808 from 1186 and we're left with 378.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3780, and continue the process.

Going ahead to step 9:
When dividing 3780 by 404, we get 9 with a remainder of 144.
Record the quotient 9 as the next digit in the result. 
Result so far: 133662.9
If we subtract 3636 from 3780, we get 144.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1440, and continue the process.

Step 10:
404 goes into 1440 3 times with a remainder of 228.
The next digit of our result is 3. 
Result so far: 133662.93
Subtract 1212 from 1440 to get 228.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2280, and continue the process.

Step 11:
The number 404 fits into 2280 5 times, leaving a remainder of 260.
Put 5 as the next digit of the answer. 
Result so far: 133662.935
Deduct 2020 from 2280 and we're left with 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 12:
404 goes into 2600 6 times with a remainder of 176.
The number 6 becomes the next digit in our result. 
Result so far: 133662.9356
Deduct 2424 from 2600 and we're left with 176.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1760, and continue the process.

Moving on to step 13:
If we divide 1760 by 404, we get 4 and a remainder of 144.
Record the quotient 4 as the next digit in the result. 
Result so far: 133662.93564
Subtract 1616 from 1760 to get 144.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1440, and continue the process.

Step 14:
If we divide 1440 by 404, we get 3 and a remainder of 228.
Write down 3 as next digit of the result. 
Result so far: 133662.935643
If we take 1212 away from 1440, we end up with 228.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2280, and continue the process.

Moving on to step 15:
404 goes into 2280 5 times with a remainder of 260.
Put 5 as the next digit of the answer. 
Result so far: 133662.9356435
Subtract 2020 from 2280 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.

Moving on to step 16:
The number 404 fits into 2600 6 times, leaving a remainder of 176.
The next digit of our result is 6. 
Result so far: 133662.93564356
Subtracting 2424 from 2600 leaves us with 176.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1760, and continue the process.

The final outcome is 133662.93564356, with a leftover of 1.76e-07.