He drinks 16/4=<<16/4=4>>4 of the small bottles each day
That is 4*16=<<4*16=64>>64 ounces
The larger bottles are 16*.25=<<16*.25=4>>4 ounces larger
So the large bottles are 16+4=<<16+4=20>>20 ounces
So he drinks 20*2=<<20*2=40>>40 ounces of those a day
So he drinks 64+40=<<64+40=104>>104 ounces a day
That means he drinks 104*7=<<104*7=728>>728 ounces a day
#### 728