Add spaces: Cookat800Wfor4minutespereach100g(ie8minutesfor200g).

Answer: Cook at 800 W for 4 minutes per each 100 g (ie 8 minutes for 200 g).

Add spaces: Figureno.18:Thegreatbirth.

Answer: Figure no. 18: The great birth.

Add spaces: Acid-washedandpolishedmetal.

Answer:
Acid-washed and polished metal.