Coefficient of thermal conductivity is the product of heat, distance and reciprocal of (area $\times$ difference in temperature $\times$ time). The new value of a unit of coefficient of thermal conductivity, if fundamental units are $21.6\text{kg}$, $\text{1 decimetre}$, $\text{4 K}$ and $\text{1 minute }$will be ______ $\times {10}^{-6}$ new units. If your answer is K, mark 2K as answer after rounding off to nearest integer.