Change 5 3/4 to 23/4 because we did 5(4) = 20 , 20 + 3 = 23. We kept the denominator the same
So, your problem becomes
23/4 × 1/3 = ?
23(1) = 23
4(3) = 12
Fraction becomes: 23/12
Then we change it to a mixed number: 1 11/12
So, therefore, your answer would have to be
1 11/12