Please provide a detailed solution for the following problem

A student made a standard solution by transferring 0.1037g of CuSO4.5H2O( molar mass =249.72g/mole ) into a 250mL volumetric flask, dissolving the salt and diluting to the mark. He then withdrew a 15mL aliquot with a volumetric pipet and transferred it to a 100mL volumetric flask. The solution was diluted to the mark and mixed well. Calculate the concentration of CuSO4.5Z2O in parts per million