I know the list of master steps has not been found yet. 25 * 6 = 150 5 * 10 = 50 150+50 = 200 900-200 = 700.

Set sn = (a1+an) n/2 700 = (11+1) n/2 and run for n minutes.

So it took * * * time n+25 minutes. I'm sorry I didn't ask. Ask for it yourself! ! !