where '=' means 'congruent to'

Solve both system of equations:

1.

x = 0 (mod 2)

x = 0 (mod 3)

x = 1 (mod 5)

x = 6 (mod 7)

Answer: x = ? (mod 210)

2.

x = 0 (mod 4)

x = 1 (mod 9)

x = 2 (mod 25)

x = 3 (mod 49)

Answer: x = ? (mod 44100)

where '=' means 'congruent to'