At such annual meeting the council shall cause to be set down in the assessment rolls, opposite to the several sums set down in the valuation of real property, the respective sums, in dollars and cents, to be paid as a tax thereon, rejecting the fractions of a cent. It shall also cause to be added and set down the aggregate valuations of the real property in the several boroughs, and shall transmit to the comptroller of the state by mail a certificate of such aggregate valuation in each borough.