90340230 ÷ 39 
We want to divide 90340230 by 39.

On to step 1:
39 can be fit into 9 0 times, resulting in a remainder of 9.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 9 leaves us with 9.
Append the next digit (0) from the dividend to 9 and continue with: 90 / 39

Moving on to step 2:
39 can be fit into 90 2 times, resulting in a remainder of 12.
The number 2 becomes the next digit in our result. 
Result so far: 2.0
If we subtract 78 from 90, we get 12.
Bring next digit (3) of the dividend behind the 12 and repeat the process: 123 / 39

On to step 3:
39 goes into 123 3 times with a remainder of 6.
Record the quotient 3 as the next digit in the result. 
Result so far: 23.0
Subtract 117 from 123 to get 6.
Fetch the next digit (4) from the dividend, attach it to 6 and continue: 64 / 39

Advancing to step 4:
39 can be fit into 64 1 times, resulting in a remainder of 25.
Use 1 as the next digit of our solution. 
Result so far: 231.0
Subtract 39 from 64 to get 25.
Take the next digit (0) from the dividend and append it to 25, then repeat: 250 / 39

On to step 5:
The number 39 fits into 250 6 times, leaving a remainder of 16.
Use 6 as the next digit of our solution. 
Result so far: 2316.0
The remainder is 16 after subtracting 234 from 250.
Grab the next digit (2) from the dividend, add it to 16, then carry on: 162 / 39

Advancing to step 6:
39 can be fit into 162 4 times, resulting in a remainder of 6.
Write down 4 as next digit of the result. 
Result so far: 23164.0
The remainder is 6 after subtracting 156 from 162.
Bring next digit (3) of the dividend behind the 6 and repeat the process: 63 / 39

Going ahead to step 7:
63 divided by 39 is 1 with a remainder of 24.
The number 1 becomes the next digit in our result. 
Result so far: 231641.0
If we take 39 away from 63, we end up with 24.
Grab the next digit (0) from the dividend, add it to 24, then carry on: 240 / 39

Going ahead to step 8:
39 can be fit into 240 6 times, resulting in a remainder of 6.
Put 6 as the next digit of the answer. 
Result so far: 2316416.0
Deduct 234 from 240 and we're left with 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Let's proceed to step 9:
When dividing 60 by 39, we get 1 with a remainder of 21.
The next digit of our result is 1. 
Result so far: 2316416.1
Subtract 39 from 60 to get 21.
Since there are no more digits in the dividend, we add a zero to the remainder making it 210, and continue the process.

On to step 10:
If we divide 210 by 39, we get 5 and a remainder of 15.
Record the quotient 5 as the next digit in the result. 
Result so far: 2316416.15
The remainder is 15 after subtracting 195 from 210.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

Moving on to step 11:
If we divide 150 by 39, we get 3 and a remainder of 33.
Write down 3 as next digit of the result. 
Result so far: 2316416.153
Subtract 117 from 150 to get 33.
Since there are no more digits in the dividend, we add a zero to the remainder making it 330, and continue the process.

Advancing to step 12:
39 goes into 330 8 times with a remainder of 18.
Record the quotient 8 as the next digit in the result. 
Result so far: 2316416.1538
Deduct 312 from 330 and we're left with 18.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

Step 13:
39 goes into 180 4 times with a remainder of 24.
Record the quotient 4 as the next digit in the result. 
Result so far: 2316416.15384
If we take 156 away from 180, we end up with 24.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

Advancing to step 14:
If we divide 240 by 39, we get 6 and a remainder of 6.
Use 6 as the next digit of our solution. 
Result so far: 2316416.153846
Deduct 234 from 240 and we're left with 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Step 15:
The number 39 fits into 60 1 times, leaving a remainder of 21.
The next digit of our result is 1. 
Result so far: 2316416.1538461
Subtracting 39 from 60 leaves us with 21.
Since there are no more digits in the dividend, we add a zero to the remainder making it 210, and continue the process.

Advancing to step 16:
If we divide 210 by 39, we get 5 and a remainder of 15.
The next digit of our result is 5. 
Result so far: 2316416.15384615
Deduct 195 from 210 and we're left with 15.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

Our division results in 2316416.15384615 with a remaining 1.5e-08.