a = array[1]; a[0] = 5; a[0] += 5; a[0] += 10; a[0] += 20; print a[0]; a[0] = 5; a[0] -= 5; a[0] -= -10; a[0] -= 20; print a[0]; a[0] = 5; a[0] *= 2; a[0] *= 3; a[0] *= 4; print a[0]; a[0] = 100; a[0] /= 2; a[0] /= 3; a[0] /= 4; print a[0]; a[0] = 100; a[0] %= 120; a[0] %= 90; a[0] %= 3; print a[0];