Complex sentence: On 26 May 1751, at 18:00, a fireball was seen over Hrašćina and few detonations were heard as far away as Varaždin, giving an estimate of nearly of area over which the meteorite's sound was audible.
Split into simpler sentences: On 26 May 1751, at 18:00, a fireball was seen over Hrašćina and few detonations were heard. The meteorite's was heard as far away as Varaždin, giving an estimate of nearly of area over which its sound was audible.