fixed readme formatting

day08-hard/README.md

@@ -56,7 +56,7 @@ Another option, with math, would be to iterate over all possible direction numbe
 and for every direction number (out of 270), and for each permutation of final nodes (6^6~=47k) compute:
 For each one out of the six starting states, how many steps does it take to get to this node? And to get to it again?
 (Answering that question with brute-forcing would require on the order of 200k operations for every starting state and final state,
-and another 200k for every final state, so that's about 200k*(270*6 + 270*6*6) ~= 2 billion operations
+and another 200k for every final state, so that's about 200k * (270 * 6 + 270 * 6^6) ~= 2 billion operations
 to precompute all ~10k values,
 but it can be optimized if we would identify the shape of transitions,
 and untangle the transition matrix into a set of loops, and of paths leading to these loops).