407389 divided by 16 
Let's see how many times 16 fits into 407389.

Advancing to step 1:
When dividing 4 by 16, we get 0 with a remainder of 4.
Use 0 as the next digit of our solution. 
Result so far: 0.0
The remainder is 4 after subtracting 0 from 4.
Grab the next digit (0) from the dividend, add it to 4, then carry on: 40 / 16

Going ahead to step 2:
16 can be fit into 40 2 times, resulting in a remainder of 8.
Put 2 as the next digit of the answer. 
Result so far: 2.0
The remainder is 8 after subtracting 32 from 40.
Include the next digit (7) from the dividend after 8, then repeat: 87 / 16

Step 3:
87 divided by 16 is 5 with a remainder of 7.
Write down 5 as next digit of the result. 
Result so far: 25.0
If we subtract 80 from 87, we get 7.
Take the next digit (3) from the dividend and append it to 7, then repeat: 73 / 16

Moving on to step 4:
If we divide 73 by 16, we get 4 and a remainder of 9.
Record the quotient 4 as the next digit in the result. 
Result so far: 254.0
Deduct 64 from 73 and we're left with 9.
Fetch the next digit (8) from the dividend, attach it to 9 and continue: 98 / 16

On to step 5:
98 divided by 16 is 6 with a remainder of 2.
Record the quotient 6 as the next digit in the result. 
Result so far: 2546.0
Subtract 96 from 98 to get 2.
Fetch the next digit (9) from the dividend, attach it to 2 and continue: 29 / 16

Step 6:
When dividing 29 by 16, we get 1 with a remainder of 13.
The next digit of our result is 1. 
Result so far: 25461.0
If we take 16 away from 29, we end up with 13.
Since there are no more digits in the dividend, we add a zero to the remainder making it 130, and continue the process.

Step 7:
When dividing 130 by 16, we get 8 with a remainder of 2.
Use 8 as the next digit of our solution. 
Result so far: 25461.8
If we take 128 away from 130, we end up with 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

On to step 8:
16 goes into 20 1 times with a remainder of 4.
Use 1 as the next digit of our solution. 
Result so far: 25461.81
Deduct 16 from 20 and we're left with 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Moving on to step 9:
When dividing 40 by 16, we get 2 with a remainder of 8.
The next digit of our result is 2. 
Result so far: 25461.812
Deduct 32 from 40 and we're left with 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Step 10:
The number 16 fits into 80 5 times, leaving a remainder of 0.
Put 5 as the next digit of the answer. 
Result so far: 25461.8125
Deduct 80 from 80 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.

Let's proceed to step 11:
0 divided by 16 is 0 with a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 25461.8125
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.

Advancing to step 12:
0 divided by 16 is 0 with a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 25461.8125
If we take 0 away from 0, 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.

After the division, we end up with 25461.8125 and a remainder of 0.0.