0 to the inside or middle of a place, container, area, etc.: --
1 used to show when a person or thing is changing from one form or condition to another: --
2 used to show movement that involves something touching something else with a lot of force but without moving inside it: --
3 in the direction of something or someone: --
4 involving or about something: --
5 used when referring to the division of one number by another number: --
What's 5 into 125?
They are doing some fascinating research into the language of dolphins.
She's researching into possible cures for AIDS.
Inquiry into the matter is pointless - no one will tell you anything.
Citizens have demanded a full inquiry into the government's handling of the epidemic.
Chuck it into the corner.
I trekked all the way into town to meet him and he didn't even turn up.