A $20 \mathrm{~m}$ chain used for surveying is found to be actually $19.7 \mathrm{~m}$. If the actual distance is $1200 \mathrm{~m}$, the chain distance in $\mathrm{m}$ will be____________
A $20 \mathrm{~m}$ chain used for surveying is found to be actually $19.7 \mathrm{~m}$. If the actual distance is $1200 \mathrm{~m}$, the chain distance in $\mathrm{m}$ will be____________