part 2 of 4\n61.8 mg to kilograms\n kg

Explanation:

Step1: Recall conversion factor

1 kg = 1000000 mg = 10^6 mg

Step2: Set up conversion

61.8 mg×$\frac{1\ kg}{10^{6}\ mg}$

Step3: Calculate result

$\frac{61.8}{10^{6}}$ kg = 6.18×10^(-5) kg

Answer:

6.18×10^(-5)