Can you please help me with this physics problem?

Find the magnitude electric field at a point midway between two charges +21.8 × 10^−9 C and +61.8 × 10^−9 C separated by a distance of 49.8 cm. The Coulomb constant is 8.99 ×10^9 Nxm^2/C^2. Answer in units of N/C.