We look at the division of 3970351 by 25 
Our goal is to divide 3970351 by 25.

Going ahead to step 1:
3 divided by 25 is 0 with a remainder of 3.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 3 and we're left with 3.
Bring next digit (9) of the dividend behind the 3 and repeat the process: 39 / 25

Let's proceed to step 2:
If we divide 39 by 25, we get 1 and a remainder of 14.
Write down 1 as next digit of the result. 
Result so far: 1.0
If we take 25 away from 39, we end up with 14.
Take the next digit (7) from the dividend and append it to 14, then repeat: 147 / 25

Let's proceed to step 3:
147 divided by 25 is 5 with a remainder of 22.
Put 5 as the next digit of the answer. 
Result so far: 15.0
Deduct 125 from 147 and we're left with 22.
Include the next digit (0) from the dividend after 22, then repeat: 220 / 25

On to step 4:
220 divided by 25 is 8 with a remainder of 20.
Put 8 as the next digit of the answer. 
Result so far: 158.0
Subtract 200 from 220 to get 20.
Take the next digit (3) from the dividend and append it to 20, then repeat: 203 / 25

Moving on to step 5:
When dividing 203 by 25, we get 8 with a remainder of 3.
Record the quotient 8 as the next digit in the result. 
Result so far: 1588.0
If we take 200 away from 203, we end up with 3.
Append the next digit (5) from the dividend to 3 and continue with: 35 / 25

Advancing to step 6:
If we divide 35 by 25, we get 1 and a remainder of 10.
The number 1 becomes the next digit in our result. 
Result so far: 15881.0
Subtracting 25 from 35 leaves us with 10.
Take the next digit (1) from the dividend and append it to 10, then repeat: 101 / 25

Going ahead to step 7:
101 divided by 25 is 4 with a remainder of 1.
Put 4 as the next digit of the answer. 
Result so far: 158814.0
If we take 100 away from 101, we end up with 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

Advancing to step 8:
10 divided by 25 is 0 with a remainder of 10.
The number 0 becomes the next digit in our result. 
Result so far: 158814.0
Deduct 0 from 10 and we're left with 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Advancing to step 9:
100 divided by 25 is 4 with a remainder of 0.
Write down 4 as next digit of the result. 
Result so far: 158814.04
If we take 100 away from 100, we end up with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Advancing to step 10:
25 goes into 0 0 times with a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 158814.04
Subtract 0 from 0 to get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

On to step 11:
25 goes into 0 0 times with a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 158814.04
If we subtract 0 from 0, we get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

The final result is 158814.04 with a remainder of 0.0.