Concept:In logarithm notation, n.m means −n+m, i.e., a negative integer part and a positive fractional part.Explanation:We need to compute 1.24567−3.62493.Write each term as a sum:1.24567=−1+0.245673.62493=−3+0.62493Now subtract: (−1+0.24567)−(−3+0.62493)Simplify: −1+0.24567+3−0.62493Combine integers: −1+3=2Combine fractions: 0.24567−0.62493=−0.37926So result is 2−0.37926=1.62074, which is a positive number.Answer:1.62074 (Option B).