We look at the division of 53385374 by 43 
We're looking to find how many times 43 goes into 53385374.

Step 1:
If we divide 5 by 43, we get 0 and a remainder of 5.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 5 to get 5.
Fetch the next digit (3) from the dividend, attach it to 5 and continue: 53 / 43

Step 2:
The number 43 fits into 53 1 times, leaving a remainder of 10.
Use 1 as the next digit of our solution. 
Result so far: 1.0
Subtracting 43 from 53 leaves us with 10.
Grab the next digit (3) from the dividend, add it to 10, then carry on: 103 / 43

Moving on to step 3:
43 goes into 103 2 times with a remainder of 17.
Write down 2 as next digit of the result. 
Result so far: 12.0
If we take 86 away from 103, we end up with 17.
Append the next digit (8) from the dividend to 17 and continue with: 178 / 43

On to step 4:
178 divided by 43 is 4 with a remainder of 6.
Use 4 as the next digit of our solution. 
Result so far: 124.0
Deduct 172 from 178 and we're left with 6.
Take the next digit (5) from the dividend and append it to 6, then repeat: 65 / 43

On to step 5:
65 divided by 43 is 1 with a remainder of 22.
Put 1 as the next digit of the answer. 
Result so far: 1241.0
Subtract 43 from 65 to get 22.
Take the next digit (3) from the dividend and append it to 22, then repeat: 223 / 43

Let's proceed to step 6:
43 can be fit into 223 5 times, resulting in a remainder of 8.
Use 5 as the next digit of our solution. 
Result so far: 12415.0
Subtracting 215 from 223 leaves us with 8.
Fetch the next digit (7) from the dividend, attach it to 8 and continue: 87 / 43

Going ahead to step 7:
43 goes into 87 2 times with a remainder of 1.
Put 2 as the next digit of the answer. 
Result so far: 124152.0
Deduct 86 from 87 and we're left with 1.
Take the next digit (4) from the dividend and append it to 1, then repeat: 14 / 43

Going ahead to step 8:
If we divide 14 by 43, we get 0 and a remainder of 14.
Put 0 as the next digit of the answer. 
Result so far: 1241520.0
Deduct 0 from 14 and we're left with 14.
Since there are no more digits in the dividend, we add a zero to the remainder making it 140, and continue the process.

On to step 9:
43 can be fit into 140 3 times, resulting in a remainder of 11.
Write down 3 as next digit of the result. 
Result so far: 1241520.3
If we take 129 away from 140, we end up with 11.
Since there are no more digits in the dividend, we add a zero to the remainder making it 110, and continue the process.

Moving on to step 10:
The number 43 fits into 110 2 times, leaving a remainder of 24.
Use 2 as the next digit of our solution. 
Result so far: 1241520.32
Deduct 86 from 110 and we're left with 24.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

Let's proceed to step 11:
When dividing 240 by 43, we get 5 with a remainder of 25.
Record the quotient 5 as the next digit in the result. 
Result so far: 1241520.325
Deduct 215 from 240 and we're left with 25.
Since there are no more digits in the dividend, we add a zero to the remainder making it 250, and continue the process.

Going ahead to step 12:
43 can be fit into 250 5 times, resulting in a remainder of 35.
Write down 5 as next digit of the result. 
Result so far: 1241520.3255
Subtracting 215 from 250 leaves us with 35.
Since there are no more digits in the dividend, we add a zero to the remainder making it 350, and continue the process.

The final outcome is 1241520.3255, with a leftover of 0.00035.