Urgent, Please Help!! Molarity? ?

1.537g Pb(NO3) is dissolved in 1% HNO3. The solution is brought to volume in 250 mL volumetric flask. The solution is further diluted using 10mL of the original solution in a 100mL volumetric flask and filling to the mark with 1% HNO3. Find the molarity of Pb2+ in the final solution.