We're dividing 378521 by 43 
Let's see how many times 43 fits into 378521.

Moving on to step 1:
When dividing 3 by 43, we get 0 with a remainder of 3.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtract 0 from 3 to get 3.
Grab the next digit (7) from the dividend, add it to 3, then carry on: 37 / 43

Advancing to step 2:
43 goes into 37 0 times with a remainder of 37.
The next digit of our result is 0. 
Result so far: 0.0
The remainder is 37 after subtracting 0 from 37.
Bring next digit (8) of the dividend behind the 37 and repeat the process: 378 / 43

On to step 3:
43 goes into 378 8 times with a remainder of 34.
Write down 8 as next digit of the result. 
Result so far: 8.0
If we take 344 away from 378, we end up with 34.
Include the next digit (5) from the dividend after 34, then repeat: 345 / 43

Let's proceed to step 4:
345 divided by 43 is 8 with a remainder of 1.
The number 8 becomes the next digit in our result. 
Result so far: 88.0
Subtract 344 from 345 to get 1.
Fetch the next digit (2) from the dividend, attach it to 1 and continue: 12 / 43

Step 5:
12 divided by 43 is 0 with a remainder of 12.
Put 0 as the next digit of the answer. 
Result so far: 880.0
If we take 0 away from 12, we end up with 12.
Grab the next digit (1) from the dividend, add it to 12, then carry on: 121 / 43

Moving on to step 6:
43 can be fit into 121 2 times, resulting in a remainder of 35.
Write down 2 as next digit of the result. 
Result so far: 8802.0
If we subtract 86 from 121, we get 35.
Since there are no more digits in the dividend, we add a zero to the remainder making it 350, and continue the process.

On to step 7:
43 can be fit into 350 8 times, resulting in a remainder of 6.
Use 8 as the next digit of our solution. 
Result so far: 8802.8
Subtract 344 from 350 to get 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Moving on to step 8:
60 divided by 43 is 1 with a remainder of 17.
The next digit of our result is 1. 
Result so far: 8802.81
Deduct 43 from 60 and we're left with 17.
Since there are no more digits in the dividend, we add a zero to the remainder making it 170, and continue the process.

Let's proceed to step 9:
The number 43 fits into 170 3 times, leaving a remainder of 41.
The next digit of our result is 3. 
Result so far: 8802.813
If we subtract 129 from 170, we 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.

Moving on to step 10:
43 can be fit into 410 9 times, resulting in a remainder of 23.
The number 9 becomes the next digit in our result. 
Result so far: 8802.8139
Subtracting 387 from 410 leaves us with 23.
Since there are no more digits in the dividend, we add a zero to the remainder making it 230, and continue the process.

Advancing to step 11:
43 can be fit into 230 5 times, resulting in a remainder of 15.
The number 5 becomes the next digit in our result. 
Result so far: 8802.81395
If we take 215 away from 230, we end up with 15.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

Going ahead to step 12:
150 divided by 43 is 3 with a remainder of 21.
Write down 3 as next digit of the result. 
Result so far: 8802.813953
Deduct 129 from 150 and we're left with 21.
Since there are no more digits in the dividend, we add a zero to the remainder making it 210, and continue the process.

Let's proceed to step 13:
43 goes into 210 4 times with a remainder of 38.
Use 4 as the next digit of our solution. 
Result so far: 8802.8139534
If we take 172 away from 210, we end up with 38.
Since there are no more digits in the dividend, we add a zero to the remainder making it 380, and continue the process.

Let's proceed to step 14:
The number 43 fits into 380 8 times, leaving a remainder of 36.
Write down 8 as next digit of the result. 
Result so far: 8802.81395348
If we take 344 away from 380, we end up with 36.
Since there are no more digits in the dividend, we add a zero to the remainder making it 360, and continue the process.

The final outcome is 8802.81395348, with a leftover of 3.6e-08.