Drop the decimals until the end and multiply like normal for example .004 × .6 drop the decimals and make it 4 × 6 which would be 24 then take your answer and go to the left the amount of spaces for tge decimals in your original problem so you would take the 24 and go to the left 4 spaces because .004 goes to the left 3 spaces and .6 goes to the left 1 space