A cell measurement is 0.003 millimetres. Using the millimetre-to-micrometre conversion, what is this length in micrometres?

Erklärung

One millimetre contains one thousand micrometres, so multiplying 0.003 by 1000 gives 3 micrometres. Dividing by 1000 would convert in the opposite direction and make the stated small length incorrectly smaller.