$M \mathrm{~kg}$ of wheat at $9.8 \%$ moisture content (wet basis) is conditioned for 6 hours in $75 \mathrm{~kg}$ of water. $\mathrm{A}$ sample of $25 \mathrm{~g}$ conditioned wheat is crushed and dried in hot air oven at $130^{\circ} \mathrm{C}$ for 1 hour that yields $20.5 \mathrm{~g}$ of bone dried material. The value of $M$ is______________
$M \mathrm{~kg}$ of wheat at $9.8 \%$ moisture content (wet basis) is conditioned for 6 hours in $75 \mathrm{~kg}$ of water. $\mathrm{A}$ sample of $25 \mathrm{~g}$ conditioned wheat is crushed and dried in hot air oven at $130^{\circ} \mathrm{C}$ for 1 hour that yields $20.5 \mathrm{~g}$ of bone dried material. The value of $M$ is______________