31 x 10 = 310 310 x 2 = 620 620 x 2 = 1240 1240 x 2 = 2480 1240 + 620 = 1860 1860 + 31 = 1891 +31=1922 =1953 =1994 =2025 1240=40x 620=20x +4ish There are kinda 64? of 31. With 30 remaining to subtract.
I don't get what you said, fr