What is 4 multiplied by 5 7/9 as a mixed number or fraction

The answer is 23 and 1:9

First you multiply 4 by 5 and wind up with 20

Then you multiply four by 7:9.

That gets you 28:9

You take out all the nines you can from 28, three in this case.

That gets you 27:9 + 1:9

Your total thing is 20+27:9+1:9

That equals 20+3+1:9

That equals 23 and 1:9