We divide 40378570 by 85
We're looking to find how many times 85 goes into 40378570.

Moving on to step 1:
The number 85 fits into 4 0 times, leaving a remainder of 4.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 4 to get 4.
Include the next digit (0) from the dividend after 4, then repeat: 40 / 85

Let's proceed to step 2:
If we divide 40 by 85, we get 0 and a remainder of 40.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 40, we end up with 40.
Fetch the next digit (3) from the dividend, attach it to 40 and continue: 403 / 85

Going ahead to step 3:
The number 85 fits into 403 4 times, leaving a remainder of 63.
Write down 4 as next digit of the result. 
Result so far: 4.0
If we take 340 away from 403, we end up with 63.
Include the next digit (7) from the dividend after 63, then repeat: 637 / 85

On to step 4:
If we divide 637 by 85, we get 7 and a remainder of 42.
Use 7 as the next digit of our solution. 
Result so far: 47.0
Deduct 595 from 637 and we're left with 42.
Include the next digit (8) from the dividend after 42, then repeat: 428 / 85

Let's proceed to step 5:
The number 85 fits into 428 5 times, leaving a remainder of 3.
Record the quotient 5 as the next digit in the result. 
Result so far: 475.0
Subtracting 425 from 428 leaves us with 3.
Grab the next digit (5) from the dividend, add it to 3, then carry on: 35 / 85

Let's proceed to step 6:
35 divided by 85 is 0 with a remainder of 35.
The number 0 becomes the next digit in our result. 
Result so far: 4750.0
If we take 0 away from 35, we end up with 35.
Append the next digit (7) from the dividend to 35 and continue with: 357 / 85

Let's proceed to step 7:
85 can be fit into 357 4 times, resulting in a remainder of 17.
Record the quotient 4 as the next digit in the result. 
Result so far: 47504.0
If we take 340 away from 357, we end up with 17.
Take the next digit (0) from the dividend and append it to 17, then repeat: 170 / 85

Step 8:
170 divided by 85 is 2 with a remainder of 0.
Write down 2 as next digit of the result. 
Result so far: 475042.0
If we subtract 170 from 170, 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.

On to step 9:
85 can be fit into 0 0 times, resulting in a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 475042.0
The remainder is 0 after subtracting 0 from 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Moving on to step 10:
If we divide 0 by 85, we get 0 and a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 475042.0
Deduct 0 from 0 and we're left 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.

The final outcome is 475042.0, with a leftover of 0.0.