Using a 60-MHz spectrometer, a chemist observes the following absorption: doublet, J = 7 Hz, at 4.00 (a) What would the chemical shift ()be

Using a 60-MHz spectrometer, a chemist observes the following absorption:
doublet, J = 7 Hz, at δ 4.00
(a) What would the chemical shift (δ)be in the 300-MHz spectrum?
(b) What would the splitting value J be in the 300-MHz spectrum?
(c) How many hertz from the TMS peak is this absorption in the 60-MHz spectrum? In the 300-MHz spectrum?