250 mL of a ${\mathrm{Na}}_2{\mathrm{CO}}_3$ solution contains 2.65 g of ${\mathrm{Na}}_2{\mathrm{CO}}_3$. 10 mL of this solution is added to X mL of water to obtain 0.001 M ${\mathrm{Na}}_2{\mathrm{CO}}_3$ solution. The value of X is:(Molecular mass of ${\mathrm{Na}}_2{\mathrm{CO}}_3$ = 106amu)