1) 119(52) + 2040/52 + 507 = 6188 + 39.23 + 507 = 6734.23
2) 119(20) + 2040/20 + 507 = 2380 + 102 + 507 = 2989
3) 119(4) + 2040/4 + 507 = 476 + 510 + 507 = 1493

Therefore, the values of the expression for x=5, x=20, and x=4 are 6734.23, 2989, and 1493 respectively.