Answer:
256
Explanation:
why well
it goes like this
write the 2 number as shown
16 gallons cups
what is more gallons or cups
its gallons so
large to small
lagre to small is mutipling and small to large is dividing so u need to mutiply the amout of cups are in a gallon wichis 16 so 16 times 16 is 256 so there u go