We're dividing 53294438 by 643 
We want to figure out the number of times 53294438 can be divided by 643.

Advancing to step 1:
The number 643 fits into 5 0 times, leaving a remainder of 5.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 5 and we're left with 5.
Fetch the next digit (3) from the dividend, attach it to 5 and continue: 53 / 643

Advancing to step 2:
The number 643 fits into 53 0 times, leaving a remainder of 53.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 53, we end up with 53.
Take the next digit (2) from the dividend and append it to 53, then repeat: 532 / 643

Let's proceed to step 3:
643 can be fit into 532 0 times, resulting in a remainder of 532.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 532 leaves us with 532.
Take the next digit (9) from the dividend and append it to 532, then repeat: 5329 / 643

Advancing to step 4:
643 goes into 5329 8 times with a remainder of 185.
The number 8 becomes the next digit in our result. 
Result so far: 8.0
Deduct 5144 from 5329 and we're left with 185.
Append the next digit (4) from the dividend to 185 and continue with: 1854 / 643

On to step 5:
The number 643 fits into 1854 2 times, leaving a remainder of 568.
Record the quotient 2 as the next digit in the result. 
Result so far: 82.0
The remainder is 568 after subtracting 1286 from 1854.
Append the next digit (4) from the dividend to 568 and continue with: 5684 / 643

On to step 6:
643 can be fit into 5684 8 times, resulting in a remainder of 540.
Write down 8 as next digit of the result. 
Result so far: 828.0
If we subtract 5144 from 5684, we get 540.
Fetch the next digit (3) from the dividend, attach it to 540 and continue: 5403 / 643

Moving on to step 7:
If we divide 5403 by 643, we get 8 and a remainder of 259.
Use 8 as the next digit of our solution. 
Result so far: 8288.0
Subtract 5144 from 5403 to get 259.
Fetch the next digit (8) from the dividend, attach it to 259 and continue: 2598 / 643

Step 8:
The number 643 fits into 2598 4 times, leaving a remainder of 26.
Put 4 as the next digit of the answer. 
Result so far: 82884.0
Deduct 2572 from 2598 and we're left with 26.
Since there are no more digits in the dividend, we add a zero to the remainder making it 260, and continue the process.

Going ahead to step 9:
The number 643 fits into 260 0 times, leaving a remainder of 260.
The next digit of our result is 0. 
Result so far: 82884.0
If we subtract 0 from 260, we 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.

Step 10:
If we divide 2600 by 643, we get 4 and a remainder of 28.
Use 4 as the next digit of our solution. 
Result so far: 82884.04
If we take 2572 away from 2600, we end up with 28.
Since there are no more digits in the dividend, we add a zero to the remainder making it 280, and continue the process.

Let's proceed to step 11:
When dividing 280 by 643, we get 0 with a remainder of 280.
Put 0 as the next digit of the answer. 
Result so far: 82884.04
Deduct 0 from 280 and we're left with 280.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2800, and continue the process.

Let's proceed to step 12:
643 can be fit into 2800 4 times, resulting in a remainder of 228.
Use 4 as the next digit of our solution. 
Result so far: 82884.0404
The remainder is 228 after subtracting 2572 from 2800.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2280, and continue the process.

Advancing to step 13:
643 goes into 2280 3 times with a remainder of 351.
Put 3 as the next digit of the answer. 
Result so far: 82884.04043
Deduct 1929 from 2280 and we're left with 351.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3510, and continue the process.

Step 14:
When dividing 3510 by 643, we get 5 with a remainder of 295.
Use 5 as the next digit of our solution. 
Result so far: 82884.040435
If we subtract 3215 from 3510, we get 295.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2950, and continue the process.

On to step 15:
643 can be fit into 2950 4 times, resulting in a remainder of 378.
The next digit of our result is 4. 
Result so far: 82884.0404354
Subtracting 2572 from 2950 leaves us 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.

Moving on to step 16:
643 can be fit into 3780 5 times, resulting in a remainder of 565.
Use 5 as the next digit of our solution. 
Result so far: 82884.04043545
Subtracting 3215 from 3780 leaves us with 565.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5650, and continue the process.

The final result is 82884.04043545 with a remainder of 5.65e-07.