Thats why we males should take our time and more than one way to satisfy a lady.
We have fingers, hands, mouths, tongues, and lips. There are toys, and vibrators, massage oils, ropes, feathers and a myriad of means to extend milady's pleasure. Don't rush to the act, that should be a climactic ending to the story.
As to how many.
I believe it is how the woman is wired both mentally and physically. I have had lovers that had many many orgasms, some that wanted more and didn't want me to stop. Others I have enjoyed have one giant one and then can't stand anymore stimulation. Still others have little ones and others great big ones. Some take time and effort to get there while some go off over and over.
I have enjoyed most all and the top of the hill is definitely worth the climb it may take to get there.