53878485 divided by 343 
Our goal is to divide 53878485 by 343.

On to step 1:
5 divided by 343 is 0 with a remainder of 5.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtract 0 from 5 to get 5.
Grab the next digit (3) from the dividend, add it to 5, then carry on: 53 / 343

Moving on to step 2:
The number 343 fits into 53 0 times, leaving a remainder of 53.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 53 leaves us with 53.
Grab the next digit (8) from the dividend, add it to 53, then carry on: 538 / 343

Going ahead to step 3:
If we divide 538 by 343, we get 1 and a remainder of 195.
Write down 1 as next digit of the result. 
Result so far: 1.0
If we subtract 343 from 538, we get 195.
Grab the next digit (7) from the dividend, add it to 195, then carry on: 1957 / 343

Step 4:
The number 343 fits into 1957 5 times, leaving a remainder of 242.
The next digit of our result is 5. 
Result so far: 15.0
The remainder is 242 after subtracting 1715 from 1957.
Bring next digit (8) of the dividend behind the 242 and repeat the process: 2428 / 343

Step 5:
2428 divided by 343 is 7 with a remainder of 27.
The number 7 becomes the next digit in our result. 
Result so far: 157.0
Subtract 2401 from 2428 to get 27.
Grab the next digit (4) from the dividend, add it to 27, then carry on: 274 / 343

Step 6:
274 divided by 343 is 0 with a remainder of 274.
Put 0 as the next digit of the answer. 
Result so far: 1570.0
Subtracting 0 from 274 leaves us with 274.
Include the next digit (8) from the dividend after 274, then repeat: 2748 / 343

Let's proceed to step 7:
If we divide 2748 by 343, we get 8 and a remainder of 4.
Record the quotient 8 as the next digit in the result. 
Result so far: 15708.0
Subtracting 2744 from 2748 leaves us with 4.
Take the next digit (5) from the dividend and append it to 4, then repeat: 45 / 343

On to step 8:
343 goes into 45 0 times with a remainder of 45.
The next digit of our result is 0. 
Result so far: 157080.0
Deduct 0 from 45 and we're left with 45.
Since there are no more digits in the dividend, we add a zero to the remainder making it 450, and continue the process.

Advancing to step 9:
343 can be fit into 450 1 times, resulting in a remainder of 107.
Use 1 as the next digit of our solution. 
Result so far: 157080.1
The remainder is 107 after subtracting 343 from 450.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1070, and continue the process.

Moving on to step 10:
When dividing 1070 by 343, we get 3 with a remainder of 41.
Put 3 as the next digit of the answer. 
Result so far: 157080.13
Subtract 1029 from 1070 to get 41.
Since there are no more digits in the dividend, we add a zero to the remainder making it 410, and continue the process.

Advancing to step 11:
343 can be fit into 410 1 times, resulting in a remainder of 67.
Put 1 as the next digit of the answer. 
Result so far: 157080.131
If we take 343 away from 410, we end up with 67.
Since there are no more digits in the dividend, we add a zero to the remainder making it 670, and continue the process.

Going ahead to step 12:
343 goes into 670 1 times with a remainder of 327.
Write down 1 as next digit of the result. 
Result so far: 157080.1311
Deduct 343 from 670 and we're left with 327.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3270, and continue the process.

In conclusion, the division gives 157080.1311 with a balance of 0.00327.