Teacher:This task involves annotating the answer type to a given question that involve some kind of complex reasoning (including numerical reasoning). Note that the questions require looking at more than one part of the passage to answer. There are 3 possible answer types (i) spans, (ii) numbers and (iii) dates. If the answer can be found in the passage, label it as "span". If the answer is a number, label as "number". Similarly, label "date" if you think the answer to the given question is a date.
Teacher: Now, understand the problem? Solve this instance: Passage: Russia admitted that three of its Su-25 strike aircraft and one Tu-22M3 long-range bomber were lost. Georgia at that time claimed it had downed at least 21 Russian aircraft. Moscow Defence Brief provided a higher estimate for air force losses, saying that Russian Air Force total losses during the war were one Tu-22M3 long-range bomber, one Su-24M Fencer fighter-bomber, one Su-24MR Fencer E reconnaissance plane and four Su-25 attack planes. Anton Lavrov listed one Su-25SM, two Su-25BM, two Su-24M and one Tu-22M3 lost. Two helicopters, a Mi-8MTKO and a Mi-24, were wrecked in an accident after the hostilities. While there are no official figures, Russian ground equipment losses in the war are estimated to be three tanks, at least 20 armoured and 32 non-armoured vehicles lost in combat. Several more vehicles were impaired in accidents. During one engagement, Georgian forces destroyed 25 out of 30 vehicles of a Russian military unit commanded by General Anatoly Khrulyov. The Russian military had no losses in the artillery, air defence and naval forces. According to Nezavisimaya Gazeta, the five-day war cost Russia an estimated 12.5billion rubles, a daily cost of 2.5billion rubles. South Ossetian forces lost two BMP-2s.
Question: How many of the Russian military vehicle's remained intact after they were destroyed by Georgian forces?
Student:
number