The magnetic flux near the axis and inside the air-core solenoid of length $60 \mathrm{cm}$ carrying current $I$ is $1.57\times {10}^6\mathrm{ Wb}.$ Its magnetic moment will be (cross-sectional area of a solenoid is very small as compared to its length, ${\mu }_0=4\pi \times {10}^{-7}$ SI units)