Convert Rontogram to Zeptogram
Unit definitions
Rontogram
$\frac{1}{10^{27}}$ of a gram is a rontogram.
Zeptogram
$\frac{1}{10^{21}}$ of a gram is a zeptogram.
How to convert Rontogram to Zeptogram
$$\text{Mass}_{\text{zg}} = \frac{\text{Mass}_{\text{rg}}}{1000000}$$
Examples
Example 1
Convert $40.0\ \text{rg}$ to $\text{zg}$.
$$\text{Mass}_{\text{zg}} = \frac{40.0}{1000000}$$
$$\text{Mass}_{\text{zg}} = 0.00004$$
$$\therefore \ 40.0\ \text{rg} = 0.00004 \ \text{zg}$$
Example 2
Convert $90.0\ \text{rg}$ to $\text{zg}$.
$$\text{Mass}_{\text{zg}} = \frac{90.0}{1000000}$$
$$\text{Mass}_{\text{zg}} = 0.00009$$
$$\therefore \ 90.0\ \text{rg} = 0.00009 \ \text{zg}$$
Example 3
Convert $115.0\ \text{rg}$ to $\text{zg}$.
$$\text{Mass}_{\text{zg}} = \frac{115.0}{1000000}$$
$$\text{Mass}_{\text{zg}} = 0.000115$$
$$\therefore \ 115.0\ \text{rg} = 0.000115 \ \text{zg}$$
Example 4
Convert $130.0\ \text{rg}$ to $\text{zg}$.
$$\text{Mass}_{\text{zg}} = \frac{130.0}{1000000}$$
$$\text{Mass}_{\text{zg}} = 0.00013$$
$$\therefore \ 130.0\ \text{rg} = 0.00013 \ \text{zg}$$
Example 5
Convert $200.0\ \text{rg}$ to $\text{zg}$.
$$\text{Mass}_{\text{zg}} = \frac{200.0}{1000000}$$
$$\text{Mass}_{\text{zg}} = 0.0002$$
$$\therefore \ 200.0\ \text{rg} = 0.0002 \ \text{zg}$$