To find the answer to a division question, one needs to multiply by the reciprocal of the divisor. The divisor is 6 2/3. To find the reciprocal , we first need to convert it into an improper fraction. We can do this by multiply 6 by 3, and then adding that product to 2, and then dividing that by 3. That gives us 20/3. The reciprocal is basically the fraction 'flipped,' so the reciprocal of 20/3 is 3/20. Now we have to multiply. 15 * 3/20 is 9/4, which simplifies to 2 + 1/4.