53661517 ÷ 408 
Our goal is to divide 53661517 by 408.

Going ahead to step 1:
408 goes into 5 0 times with a remainder of 5.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 5 after subtracting 0 from 5.
Bring next digit (3) of the dividend behind the 5 and repeat the process: 53 / 408

Moving on to step 2:
The number 408 fits into 53 0 times, leaving a remainder of 53.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 53, we get 53.
Fetch the next digit (6) from the dividend, attach it to 53 and continue: 536 / 408

Going ahead to step 3:
408 goes into 536 1 times with a remainder of 128.
Write down 1 as next digit of the result. 
Result so far: 1.0
Subtract 408 from 536 to get 128.
Append the next digit (6) from the dividend to 128 and continue with: 1286 / 408

Going ahead to step 4:
If we divide 1286 by 408, we get 3 and a remainder of 62.
Use 3 as the next digit of our solution. 
Result so far: 13.0
Deduct 1224 from 1286 and we're left with 62.
Grab the next digit (1) from the dividend, add it to 62, then carry on: 621 / 408

Let's proceed to step 5:
The number 408 fits into 621 1 times, leaving a remainder of 213.
Write down 1 as next digit of the result. 
Result so far: 131.0
If we subtract 408 from 621, we get 213.
Take the next digit (5) from the dividend and append it to 213, then repeat: 2135 / 408

On to step 6:
408 can be fit into 2135 5 times, resulting in a remainder of 95.
Put 5 as the next digit of the answer. 
Result so far: 1315.0
The remainder is 95 after subtracting 2040 from 2135.
Take the next digit (1) from the dividend and append it to 95, then repeat: 951 / 408

Moving on to step 7:
408 goes into 951 2 times with a remainder of 135.
Write down 2 as next digit of the result. 
Result so far: 13152.0
Deduct 816 from 951 and we're left with 135.
Bring next digit (7) of the dividend behind the 135 and repeat the process: 1357 / 408

Let's proceed to step 8:
The number 408 fits into 1357 3 times, leaving a remainder of 133.
The number 3 becomes the next digit in our result. 
Result so far: 131523.0
Deduct 1224 from 1357 and we're left with 133.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1330, and continue the process.

Moving on to step 9:
408 goes into 1330 3 times with a remainder of 106.
Put 3 as the next digit of the answer. 
Result so far: 131523.3
The remainder is 106 after subtracting 1224 from 1330.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1060, and continue the process.

Moving on to step 10:
When dividing 1060 by 408, we get 2 with a remainder of 244.
Write down 2 as next digit of the result. 
Result so far: 131523.32
Subtracting 816 from 1060 leaves us with 244.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2440, and continue the process.

Moving on to step 11:
If we divide 2440 by 408, we get 5 and a remainder of 400.
Use 5 as the next digit of our solution. 
Result so far: 131523.325
Subtract 2040 from 2440 to get 400.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4000, and continue the process.

Step 12:
When dividing 4000 by 408, we get 9 with a remainder of 328.
Use 9 as the next digit of our solution. 
Result so far: 131523.3259
Deduct 3672 from 4000 and we're left with 328.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3280, and continue the process.

Going ahead to step 13:
3280 divided by 408 is 8 with a remainder of 16.
Write down 8 as next digit of the result. 
Result so far: 131523.32598
The remainder is 16 after subtracting 3264 from 3280.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

Let's proceed to step 14:
408 goes into 160 0 times with a remainder of 160.
Use 0 as the next digit of our solution. 
Result so far: 131523.32598
The remainder is 160 after subtracting 0 from 160.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1600, and continue the process.

Moving on to step 15:
If we divide 1600 by 408, we get 3 and a remainder of 376.
Use 3 as the next digit of our solution. 
Result so far: 131523.3259803
If we subtract 1224 from 1600, we get 376.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3760, and continue the process.

Moving on to step 16:
If we divide 3760 by 408, we get 9 and a remainder of 88.
The next digit of our result is 9. 
Result so far: 131523.32598039
Deduct 3672 from 3760 and we're left with 88.
Since there are no more digits in the dividend, we add a zero to the remainder making it 880, and continue the process.

The quotient of the division is 131523.32598039, and the remainder is 8.8e-08.