To divide 6 3/8 by 3, you need to first convert the mixed number 6 3/8 into an improper fraction.
To do this, multiply the whole number (6) by the denominator (8), then add this result to the numerator (3). The resulting numerator will be 6 x 8 + 3 = 48 + 3 = 51.
Now the mixed number 6 3/8 can be written as an improper fraction, which is 51/8.
Next, divide 51/8 by 3. To do this, multiply the numerator (51) by the reciprocal of the denominator (3/1).
So, 51/8 ÷ 3 = 51/8 x 1/3.
Multiply the numerators together (51 x 1 = 51) and multiply the denominators together (8 x 3 = 24):
51/8 x 1/3 = 51/24.
The fraction can be simplified by finding the greatest common factor of 51 and 24, which is 3.
Divide both the numerator and denominator by 3:
51/24 ÷ 3/3 = (51 ÷ 3) / (24 ÷ 3) = 17/8.
Therefore, 6 3/8 divided by 3 is equal to 17/8.