Let's divide 39401578 by 422
We want to figure out the number of times 39401578 can be divided by 422.

Step 1:
If we divide 3 by 422, we get 0 and a remainder of 3.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 3 to get 3.
Include the next digit (9) from the dividend after 3, then repeat: 39 / 422

Step 2:
422 can be fit into 39 0 times, resulting in a remainder of 39.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 39, we get 39.
Fetch the next digit (4) from the dividend, attach it to 39 and continue: 394 / 422

Advancing to step 3:
422 goes into 394 0 times with a remainder of 394.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 394, we end up with 394.
Bring next digit (0) of the dividend behind the 394 and repeat the process: 3940 / 422

Let's proceed to step 4:
3940 divided by 422 is 9 with a remainder of 142.
Put 9 as the next digit of the answer. 
Result so far: 9.0
Subtract 3798 from 3940 to get 142.
Append the next digit (1) from the dividend to 142 and continue with: 1421 / 422

Step 5:
422 goes into 1421 3 times with a remainder of 155.
Record the quotient 3 as the next digit in the result. 
Result so far: 93.0
Subtract 1266 from 1421 to get 155.
Bring next digit (5) of the dividend behind the 155 and repeat the process: 1555 / 422

Moving on to step 6:
When dividing 1555 by 422, we get 3 with a remainder of 289.
Record the quotient 3 as the next digit in the result. 
Result so far: 933.0
Subtract 1266 from 1555 to get 289.
Bring next digit (7) of the dividend behind the 289 and repeat the process: 2897 / 422

Advancing to step 7:
When dividing 2897 by 422, we get 6 with a remainder of 365.
Put 6 as the next digit of the answer. 
Result so far: 9336.0
Subtract 2532 from 2897 to get 365.
Take the next digit (8) from the dividend and append it to 365, then repeat: 3658 / 422

Step 8:
When dividing 3658 by 422, we get 8 with a remainder of 282.
Put 8 as the next digit of the answer. 
Result so far: 93368.0
Subtract 3376 from 3658 to get 282.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2820, and continue the process.

On to step 9:
The number 422 fits into 2820 6 times, leaving a remainder of 288.
Write down 6 as next digit of the result. 
Result so far: 93368.6
Deduct 2532 from 2820 and we're left with 288.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2880, and continue the process.

Let's proceed to step 10:
The number 422 fits into 2880 6 times, leaving a remainder of 348.
Use 6 as the next digit of our solution. 
Result so far: 93368.66
Subtract 2532 from 2880 to get 348.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3480, and continue the process.

The final outcome is 93368.66, with a leftover of 0.348.