Thermal, Optical & Electrical Properties of Grains

Using Siebel's equation $c_p = 0.837 + 0.0335 M$, where $M$ is moisture content in percent wet basis and $c_p$ is specific heat in $\text{kJ/(kg}\,\text{K)}$, the specific heat of wheat grain at $M = 20.0\%$ wet basis is ________ $\text{kJ/(kg}\,\text{K)}$ (round off to two decimal places).