Give and be a happy giver. Give time , give good words, give help of any kind . I don't know if money is the answer since there is public support for basic needs which is already extracted from our wealth. It is a matter of giving as it is needed to encourage the spirit of others and to give comfort as it is needed. The body can be nurished by bread from money but the spirit is nurished from above. Love one another . Feed the hungry , shelter the body , nurture the spirit.
There is no set amount ... it is way too much to measure.