We're dividing 938458 by 3 
Let's see how many times 3 fits into 938458.

On to step 1:
When dividing 9 by 3, we get 3 with a remainder of 0.
Record the quotient 3 as the next digit in the result. 
Result so far: 3.0
If we take 9 away from 9, we end up with 0.
Include the next digit (3) from the dividend after 0, then repeat: 3 / 3

Advancing to step 2:
When dividing 3 by 3, we get 1 with a remainder of 0.
Use 1 as the next digit of our solution. 
Result so far: 31.0
If we subtract 3 from 3, we get 0.
Grab the next digit (8) from the dividend, add it to 0, then carry on: 8 / 3

Moving on to step 3:
When dividing 8 by 3, we get 2 with a remainder of 2.
Use 2 as the next digit of our solution. 
Result so far: 312.0
The remainder is 2 after subtracting 6 from 8.
Grab the next digit (4) from the dividend, add it to 2, then carry on: 24 / 3

Step 4:
3 can be fit into 24 8 times, resulting in a remainder of 0.
Put 8 as the next digit of the answer. 
Result so far: 3128.0
Subtract 24 from 24 to get 0.
Bring next digit (5) of the dividend behind the 0 and repeat the process: 5 / 3

Going ahead to step 5:
If we divide 5 by 3, we get 1 and a remainder of 2.
The next digit of our result is 1. 
Result so far: 31281.0
If we take 3 away from 5, we end up with 2.
Bring next digit (8) of the dividend behind the 2 and repeat the process: 28 / 3

Step 6:
When dividing 28 by 3, we get 9 with a remainder of 1.
Put 9 as the next digit of the answer. 
Result so far: 312819.0
If we take 27 away from 28, 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.

Going ahead to step 7:
If we divide 10 by 3, we get 3 and a remainder of 1.
Put 3 as the next digit of the answer. 
Result so far: 312819.3
Subtract 9 from 10 to get 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

Moving on to step 8:
3 goes into 10 3 times with a remainder of 1.
Use 3 as the next digit of our solution. 
Result so far: 312819.33
If we subtract 9 from 10, we get 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

The quotient of the division is 312819.33, and the remainder is 0.001.