Physical Science equation balance challenge

For 3 bonus points (all or nothing), balance #16 please.

It says SiO2 + HF ----- SiF4 + H2O

I cannot shrink the subscripts, but you can tell all those numbers are subscripts.

I will either be in room 331 or in the cafeteria for the rest of the day.

If this one is solved before end of 3rd block, I will put another up for 4th block. Must be turned in before 3:00 on MY watch.

good luck