We look at the division of 25215510 by 340 
Let's see how many times 340 fits into 25215510.

On to step 1:
340 goes into 2 0 times with a remainder of 2.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 2 leaves us with 2.
Fetch the next digit (5) from the dividend, attach it to 2 and continue: 25 / 340

Let's proceed to step 2:
25 divided by 340 is 0 with a remainder of 25.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 25 and we're left with 25.
Bring next digit (2) of the dividend behind the 25 and repeat the process: 252 / 340

On to step 3:
340 goes into 252 0 times with a remainder of 252.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtracting 0 from 252 leaves us with 252.
Include the next digit (1) from the dividend after 252, then repeat: 2521 / 340

Moving on to step 4:
When dividing 2521 by 340, we get 7 with a remainder of 141.
Record the quotient 7 as the next digit in the result. 
Result so far: 7.0
Deduct 2380 from 2521 and we're left with 141.
Bring next digit (5) of the dividend behind the 141 and repeat the process: 1415 / 340

Moving on to step 5:
The number 340 fits into 1415 4 times, leaving a remainder of 55.
The number 4 becomes the next digit in our result. 
Result so far: 74.0
Deduct 1360 from 1415 and we're left with 55.
Append the next digit (5) from the dividend to 55 and continue with: 555 / 340

Moving on to step 6:
340 goes into 555 1 times with a remainder of 215.
Write down 1 as next digit of the result. 
Result so far: 741.0
If we take 340 away from 555, we end up with 215.
Append the next digit (1) from the dividend to 215 and continue with: 2151 / 340

Advancing to step 7:
340 can be fit into 2151 6 times, resulting in a remainder of 111.
Use 6 as the next digit of our solution. 
Result so far: 7416.0
Deduct 2040 from 2151 and we're left with 111.
Grab the next digit (0) from the dividend, add it to 111, then carry on: 1110 / 340

Going ahead to step 8:
340 goes into 1110 3 times with a remainder of 90.
The next digit of our result is 3. 
Result so far: 74163.0
Subtracting 1020 from 1110 leaves us with 90.
Since there are no more digits in the dividend, we add a zero to the remainder making it 900, and continue the process.

Step 9:
340 can be fit into 900 2 times, resulting in a remainder of 220.
Write down 2 as next digit of the result. 
Result so far: 74163.2
The remainder is 220 after subtracting 680 from 900.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2200, and continue the process.

Advancing to step 10:
If we divide 2200 by 340, we get 6 and a remainder of 160.
Write down 6 as next digit of the result. 
Result so far: 74163.26
Deduct 2040 from 2200 and we're left with 160.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1600, and continue the process.

Step 11:
When dividing 1600 by 340, we get 4 with a remainder of 240.
Use 4 as the next digit of our solution. 
Result so far: 74163.264
Subtract 1360 from 1600 to get 240.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2400, and continue the process.

Advancing to step 12:
When dividing 2400 by 340, we get 7 with a remainder of 20.
Write down 7 as next digit of the result. 
Result so far: 74163.2647
Deduct 2380 from 2400 and we're left with 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Let's proceed to step 13:
When dividing 200 by 340, we get 0 with a remainder of 200.
The next digit of our result is 0. 
Result so far: 74163.2647
Subtracting 0 from 200 leaves us with 200.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2000, and continue the process.

Step 14:
2000 divided by 340 is 5 with a remainder of 300.
The number 5 becomes the next digit in our result. 
Result so far: 74163.264705
Subtract 1700 from 2000 to get 300.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3000, and continue the process.

Going ahead to step 15:
340 can be fit into 3000 8 times, resulting in a remainder of 280.
The next digit of our result is 8. 
Result so far: 74163.2647058
Subtract 2720 from 3000 to get 280.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2800, and continue the process.

Advancing to step 16:
The number 340 fits into 2800 8 times, leaving a remainder of 80.
The next digit of our result is 8. 
Result so far: 74163.26470588
Subtract 2720 from 2800 to get 80.
Since there are no more digits in the dividend, we add a zero to the remainder making it 800, and continue the process.

The final outcome is 74163.26470588, with a leftover of 8e-08.