I have the answer but need more solving details, thx

An American put has strike $10 and underlying asset described by CRR notation S=10,u=1.2,d=0.9. For a ten-step model, what is the expiry value of this put at node (10,3) to four significant figures? Do not include the dollar sign (\$) in your answer. An American put has strike $10 and underlying asset described by CRR notation S=10,u=1.2,d=0.9. For a ten-step model, what is the expiry value of this put at node (10,3) to four significant figures? Do not include the dollar sign (\$) in your