25186970 ÷ 408 
Our goal is to divide 25186970 by 408.

Step 1:
2 divided by 408 is 0 with a remainder of 2.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 2 after subtracting 0 from 2.
Append the next digit (5) from the dividend to 2 and continue with: 25 / 408

Going ahead to step 2:
The number 408 fits into 25 0 times, leaving a remainder of 25.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 25 and we're left with 25.
Take the next digit (1) from the dividend and append it to 25, then repeat: 251 / 408

Moving on to step 3:
251 divided by 408 is 0 with a remainder of 251.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 251 after subtracting 0 from 251.
Include the next digit (8) from the dividend after 251, then repeat: 2518 / 408

Let's proceed to step 4:
408 goes into 2518 6 times with a remainder of 70.
Use 6 as the next digit of our solution. 
Result so far: 6.0
Subtract 2448 from 2518 to get 70.
Fetch the next digit (6) from the dividend, attach it to 70 and continue: 706 / 408

Going ahead to step 5:
408 goes into 706 1 times with a remainder of 298.
The next digit of our result is 1. 
Result so far: 61.0
The remainder is 298 after subtracting 408 from 706.
Grab the next digit (9) from the dividend, add it to 298, then carry on: 2989 / 408

Moving on to step 6:
When dividing 2989 by 408, we get 7 with a remainder of 133.
The next digit of our result is 7. 
Result so far: 617.0
If we subtract 2856 from 2989, we get 133.
Bring next digit (7) of the dividend behind the 133 and repeat the process: 1337 / 408

Advancing to step 7:
If we divide 1337 by 408, we get 3 and a remainder of 113.
Record the quotient 3 as the next digit in the result. 
Result so far: 6173.0
If we take 1224 away from 1337, we end up with 113.
Bring next digit (0) of the dividend behind the 113 and repeat the process: 1130 / 408

On to step 8:
When dividing 1130 by 408, we get 2 with a remainder of 314.
Use 2 as the next digit of our solution. 
Result so far: 61732.0
Subtract 816 from 1130 to get 314.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3140, and continue the process.

Advancing to step 9:
When dividing 3140 by 408, we get 7 with a remainder of 284.
Put 7 as the next digit of the answer. 
Result so far: 61732.7
The remainder is 284 after subtracting 2856 from 3140.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2840, and continue the process.

On to step 10:
408 can be fit into 2840 6 times, resulting in a remainder of 392.
The next digit of our result is 6. 
Result so far: 61732.76
Subtracting 2448 from 2840 leaves us with 392.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3920, and continue the process.

Moving on to step 11:
408 goes into 3920 9 times with a remainder of 248.
Record the quotient 9 as the next digit in the result. 
Result so far: 61732.769
Subtract 3672 from 3920 to get 248.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2480, and continue the process.

On to step 12:
The number 408 fits into 2480 6 times, leaving a remainder of 32.
Use 6 as the next digit of our solution. 
Result so far: 61732.7696
The remainder is 32 after subtracting 2448 from 2480.
Since there are no more digits in the dividend, we add a zero to the remainder making it 320, and continue the process.

Advancing to step 13:
When dividing 320 by 408, we get 0 with a remainder of 320.
The number 0 becomes the next digit in our result. 
Result so far: 61732.7696
Subtract 0 from 320 to get 320.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3200, and continue the process.

Going ahead to step 14:
408 goes into 3200 7 times with a remainder of 344.
Put 7 as the next digit of the answer. 
Result so far: 61732.769607
The remainder is 344 after subtracting 2856 from 3200.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3440, and continue the process.

Advancing to step 15:
When dividing 3440 by 408, we get 8 with a remainder of 176.
The number 8 becomes the next digit in our result. 
Result so far: 61732.7696078
Deduct 3264 from 3440 and we're left with 176.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1760, and continue the process.

Let's proceed to step 16:
The number 408 fits into 1760 4 times, leaving a remainder of 128.
Write down 4 as next digit of the result. 
Result so far: 61732.76960784
If we take 1632 away from 1760, we end up with 128.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1280, and continue the process.

In conclusion, the division gives 61732.76960784 with a balance of 1.28e-07.